PhET/C3/Projectile-Motion/English-timed - Revision history

Sandhya.np14 at 04:15, 14 August 2018

2018-08-14T04:15:32Z

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Sandhya.np14 at 03:12, 14 August 2018

2018-08-14T03:12:47Z

Madhurig at 12:47, 8 August 2018

2018-08-08T12:47:09Z

PoojaMoolya: Created page with "{| border=1 | Time | Narration |- || 00:01 || Welcome to this tutorial on '''Projectile motion'''. |- || 00:05 || In this tutorial we will demonstrate, '''Projec..."

2018-07-31T09:53:25Z

Created page with "{| border=1 | Time | Narration |- || 00:01 || Welcome to this tutorial on '''Projectile motion'''. |- || 00:05 || In this tutorial we will demonstrate, '''Projec..."

New page

{| border=1
| Time
| Narration

|-
|| 00:01
|| Welcome to this tutorial on '''Projectile motion'''.

|-
|| 00:05
|| In this tutorial we will demonstrate, '''Projectile Motion PhET simulation'''.

|-
||00:11
|| To follow this tutorial, Learner should be familiar with topics in high school physics.

|-
||00:18
|| Here I am using, Ubuntu Linux OS version 14.04

Java version 1.7

|-
|| 00:26
||Firefox Web Browser version 53.02.2.

|-
|| 00:31
|| Using this simulation we will, Determine how each parameter affects the trajectory of an object

|-
|| 00:39
||Estimate where an object will land, given its initial conditions.

|-
|| 00:45
||Determine how horizontal and vertical motion of a projectile are independent.

|-
|| 00:51
|| Investigate the variables that affect the drag force.

|-
|| 00:56
||Examine the effect of drag force on the velocity and acceleration.

|-
|| 01:02
|| Let us define a projectile.

|-
|| 01:05
||A projectile is any object that is fired, pitched or thrown.

|-
|| 01:11
||The path of the projectile is called its trajectory.

|-
|| 01:15
|| '''Projectile motion''' is a form of motion, in which a '''projectile''' is thrown near the Earth's surface.

|-
|| 01:22
|| A projectile moves along a curved path under the action of gravity.

|-
|| 01:27
||Gravity is the downward force acting on a projectile.

|-
|| 01:32
||Gravity influences its vertical motion and causes the parabolic trajectory.

|-
|| 01:39
|| Some examples of projectile motion are, A baseball that has been thrown.

|-
|| 01:46
||A bullet that is fired from a gun or rifle.

|-
|| 01:51
|| Use the given link to download the simulation.

|-
|| 01:55
|| I have already downloaded ''' Projectile Motion PhET simulation''' to my '''Downloads''' folder.

|-
|| 02:02
|| To open the simulation, right click on '''projectile-motion_en.html''' file.

|-
|| 02:10
||Select the option '''Open With Firefox Web Browser'''.

|-
|| 02:15
|| This is the interface of '''Projectile Motion PhET simulation'''.

|-
||02:20
|| The interface has four screens,

'''Intro'''

|-
|| 02:25
||'''Vectors'''

|-
|| 02:27
||'''Drag '''

|-
|| 02:29
||'''Lab'''.

|-
|| 02:31
|| Click on '''Intro''' screen.

|-
|| 02:34
||Using this screen let's study the factors affecting a projectile’s trajectory.

|-
|| 02:40
|| '''Intro''' screen has a cannon mounted on a pedestal.

|-
|| 02:45
|| Default height of the pedestal is 10 m.

|-
|| 02:49
||'''Height label''' disappears when height is adjusted.

|-
|| 02:53
||We can change the height of the '''pedestal''' between 0 to 15 m.

|-
|| 02:59
|| Click on '''Reset''' button to reset the simulation.

|-
|| 03:03
|| By default, '''cannon's angle '''is at 0 degrees.

|-
|| 03:08
||Cannon's angle can be changed from - 90 degrees to 90 degrees(-90 to 90).

|-
|| 03:14
||Drag Cannon's angle to zero degrees.

|-
|| 03:18
|| At the bottom of the screen we have, a slider to change '''Initial Speed'''.

|-
|| 03:23
|| Yellow '''Eraser''' icon to erase the trajectory.

|-
|| 03:27
|| Red '''Launch Projectile''' icon to launch the '''projectile'''.

|-
|| 03:32
|| '''Play/Pause '''and '''Step '''buttons.

|-
|| 03:36
|| '''Normal '''and ''' Slow''' radio buttons to change animation speed.

|-
|| 03:41
|| At the top left corner we have ''' Zoom in''' and '''Zoom out ''' buttons to zoom the view.

|-
|| 03:48
|| On the top right corner we have a white box. It contains a probe and a measuring tape.

|-
|| 03:56
|| Probe is used to measure '''Time''', '''Range''' and '''Height''' of the trajectory.

|-
|| 04:02
|| A drop down list is provided to select the projectiles.

|-
|| 04:06
||By default '''Pumpkin''' is selected as a projectile.

|-
|| 04:10
|| '''Mass''' and '''Diameter''' of the selected projectile is displayed below the list.

|-
|| 04:16
|| Next we have a check box to introduce '''Air Resistance''' with''' Drag Coefficient'''.

|-
|| 04:22
|| Then we have '''Velocity Vectors''' and '''Acceleration Vectors ''' check boxes.

|-
|| 04:28
|| Let us select '''Human''' projectile from the list. Observe the displayed '''Mass '''and '''Diameter''' of the '''Human projectile.'''

|-
|| 04:38
|| Click on red''' Launch''' icon. Observe the trajectory.

|-
|| 04:44
|| Next we will change cannon's angle to 10 degrees.

|-
|| 04:49
||Launch the '''projectile'''.

|-
|| 04:54
|| Observe projectile's trajectory as we change cannon's angle.

|-
|| 04:59
|| Highest point is shown in green colour.

|-
|| 05:03
|| Drag and place the probe on the highest point of the trajectory.

|-
|| 05:07
||Note the '''Time, Range''' and '''Height''' at the highest point.

|-
|| 05:12
|| Let us make tabular column for '''Cannon's Angle, Time Range''' and ''' Height'''.

|-
|| 05:19
||I will entered the values for 10 degrees angle.

|-
|| 05:27
|| Drag the probe back to its place.

|-
|| 05:30
|| Similarly I will change the cannon's angle to 20 degrees.

|-
|| 05:35
||Launch the projectile and observe the trajectory.

|-
|| 05:40
|| Place the probe on highest point of the trajectory.

|-
|| 05:44
||Note the values of '''Time, Range''' and '''Height ''' in the table.

I have entered the values in the table.

|-
|| 05:55
|| As an assignment, Change the values of cannon's angle and complete the tabular column.

|-
|| 06:04
|| Click on '''Reset''' button to reset the simulation.

|-
|| 06:08
|| Launch the projectile and observe the trajectory.

|-
|| 06:13
|| Adjust the target on the base line so that projectile falls on the target.

|-
||06:19
|| Launch the projectile and observe the trajectory.

|-
|| 06:23
||Observe the stars as the projectile hits the target.

|-
|| 06:27
|| By default slider is at '''15 meter per second Initial speed.'''

|-
|| 06:33
||'''Initial Speed''' can be changed between 0 to 30 meter per second.

|-
|| 06:39
|| Drag the '''Initial Speed''' slider to 20 meter per second and launch the projectile.

|-
|| 06:49
||Notice that, projectile moves faster and falls at a greater distance on the base line.

|-
|| 06:56
||Click on '''Slow''' radio button and launch the projectile.

|-
|| 07:01
||Observe that, the projectile moves slowly.

|-
|| 07:05
|| Notice that, '''Slow''' radio button slows down the animation speed.

|-
|| 07:10
||It does not reduce the projectile's speed.

|-
|| 07:14
|| Click on yellow '''eraser''' icon to erase the earlier trajectories.

|-
|| 07:20
|| Adjust the cannon's angle to -10 degrees and initial speed to 25 meter per second.

|-
|| 07:28
||Launch the projectile.

|-
|| 07:34
||Observe the trajectory and distance covered.

|-
|| 07:38
|| Click on '''Velocity Vector's Total''' and '''Components''' check boxes.

|-
|| 07:45
||Launch the projectile.
|-
|| 07:48
|| Observe the '''Velocity vector''' and its components on the trajectory.

|-
|| 07:54
||Uncheck the boxes.

|-
|| 07:57
|| Click on '''Acceleration Vectors'''' '''Total''' and '''Components''' check boxes.

|-
|| 08:03
||Launch the projectile and observe the trajectory.

|-
||08:11
|| As an assignment, Observe the projectile motion by

1. Selecting various projectiles

2. Changing initial speed and height of the pedestal.

|-
|| 08:23
|| Next we will move on to''' Vectors''' screen.

|-
|| 08:27
||Click on '''Vectors''' screen.

|-
|| 08:30
|| In this screen we will explore, how velocity, acceleration and force are affected by air resistance.

|-
|| 08:39
|| '''Vectors''' screen has nearly same tools as in '''Intro''' screen.

|-
|| 08:44
|| In this screen, pedestal's height is 0 metres and cannon's angle is 80 degrees.

|-
|| 08:52
|| Change cannon's angle to 70 degrees and launch the projectile.

|-
|| 09:03
|| Here we have only one projectile - '''Cannonball'''.

|-
|| 09:07
||We can change the diameter and mass by dragging.

|-
|| 09:14
|| Uncheck '''Air Resistance''' checkbox and launch the projectile.

|-
|| 09:27
||Without air resistance projectile moves to a greater altitude and longer distance .

|-
|| 09:34
|| Now click on the following check boxes- '''Velocity Vectors'''

|-
|| 09:40
||'''Acceleration Vectors'''

|-
|| 09:42
||'''Force Vectors'''.

|-
|| 09:44
||Launch the projectile.

|-
|| 09:46
||You will see the vector components on the trajectory.

|-
|| 09:51
|| Next we will move on to''' Drag''' screen.

|-
|| 09:54
|| Click on '''Drag''' screen at the bottom of the interface.

|-
|| 09:59
||In this screen we will, Determine the factors that affect the drag force.

|-
|| 10:05
||Observe the relation between drag force and velocity.

|-
|| 10:10
|| Additionally this screen has, '''Drag Coefficient''' and '''Altitude '''sliders.

|-
|| 10:16
|| Let us move the '''Drag Coefficient''' slider to 0.04.

|-
|| 10:21
||Notice the shape of the projectile. It appears as a water drop.

|-
|| 10:27
|| Launch the projectile and observe the trajectory.

|-
|| 10:37
||When the drag coefficient is small- projectile travels to a greater altitude and greater distance.

|-
|| 10:45
|| Drag and place the probe on the highest point.

|-
|| 10:49
||Probe displays the '''Time, Range''' and '''height''' of the projectile.

|-
|| 10:54
||Drag the probe back to its place.

|-
|| 10:57
|| Change initial speed to 14 meter per second and Drag Coefficient to 0.45

|-
|| 11:06
||Click '''Zoom In''' button to zoom the view.

|-
|| 11:11
||Launch the projectile and observe the trajectory.

|-
|| 11:17
|| Click on '''Zoom Out ''' button to show normal view.

|-
|| 11:21
|| Now move the '''Drag coefficient '''slider to 0.50.

|-
|| 11:27
||Change the initial speed to 24 meter per second.

|-
|| 11:32
||Drag the '''Altitude''' slider to 1700 meter and launch the projectile.

|-
|| 11:45
||Observe the trajectory.

|-
|| 11:50
|| Using measuring tape measure the distance covered by the projectile.

|-
|| 12:06
|| Now we will move on to '''Lab''' screen.

|-
|| 12:09
|| Click on '''Lab''' screen.

|-
|| 12:12
||In this screen we have a list of projectiles.

|-
|| 12:16
|| Let us select the projectile as '''Custom'''.

|-
|| 12:20
||Here we can change values of, '''Mass'''

|-
|| 12:24
||'''Diameter'''

|-
|| 12:26
||'''Gravity'''

|-
|| 12:28
||'''Altitude''' and '''Drag Coefficient''' manually.

|-
|| 12:33
|| Beside each attribute, notice an yellow coloured edit button.

|-
|| 12:38
||These buttons are used to change the values manually.

|-
|| 12:43
|| Now I will change '''Gravity''' value.

|-
|| 12:46
||Click on edit button corresponding to '''Gravity'''.

|-
|| 12:50
||A key pad opens.

|-
|| 12:53
||Select 15 and click '''Enter'''.

|-
|| 12:59
|| Check '''Air Resistance ''' check box.

|-
|| 13:03
||Change the '''Altitude''' value to 2000 meter using edit button.

|-
|| 13:11
||Launch the projectile and observe the trajectory.

|-
||13:17
|| Drag and place the probe to measure the Highest point.

|-
|| 13:22
|| As an assignment, Change various custom parameter and launch the projectile.

|-
|| 13:29
|| Let us summarize.

|-
|| 13:31
|| In this tutorial, we have demonstrated, '''Projectile Motion PhET simulation''' .

|-
|| 13:37
|| Using this simulation we have, Determined how each parameter affects the trajectory of an object

|-
|| 13:45
||Estimated where an object will land, given its initial conditions.

|-
|| 13:51
||Determined how horizontal and vertical motion of a projectile are independent.

|-
||13:58
||Investigated the variables that affect the drag force.

|-
|| 14:03
||Examined the effect of drag force on the velocity and acceleration.

|-
|| 14:09
|| The video at the following link summarizes the Spoken Tutorial project.

Please download and watch it.

|-
|| 14:16
|| The '''Spoken Tutorial Project '''team, conducts workshops using spoken tutorials and

gives certificates on passing online tests.

|-
|| 14:26
||For more details, please write to us. Please post your timed queries on this forum.

|-
|| 14:33
|| This project is partially funded by Pandit Madan Mohan Malaviya National Mission on Teachers and Teaching.

|-
|| 14:41
|| Spoken Tutorial Project is funded by NMEICT, MHRD, Government of India.

More information on this mission is available at this link.

|-
|| 14:52
|| This is Madhuri Ganapathi from IIT Bombay, singing off.

Thank you for joining.
|-

|}

@@ Line 9: / Line 9: @@
 |-
 || 00:05
-|| In this tutorial we will demonstrate, '''Projectile Motion PhET simulation'''.
+|| In this tutorial, we will demonstrate '''Projectile Motion PhET simulation'''.
 |-
 ||00:11
-|| To follow this tutorial, learner should be familiar with topics in high school physics.
+|| To follow this tutorial, learner should be familiar with topics in high-school physics.
 |-
 ||00:18
-|| Here I am using,
+|| Here I am using:
-Ubuntu Linux OS version 14.04
+'''Ubuntu Linux OS''' version 14.04,
-Java version 1.7
+'''Java''' version 1.7,
 |-
 || 00:26
-||Firefox Web Browser version 53.02.2.
+||'''Firefox Web Browser''' version 53.02.2.
 |-
 || 00:31
-|| Using this simulation we will,
+|| Using this simulation, we will-
-. Determine how each parameter affects the trajectory of an object
+. Determine how each parameter affects the trajectory of an object.
 |-
@@ Line 62: / Line 62: @@
 |-
 || 01:15
-|| Projectile motion, is a form of motion, in which a projectile is thrown near the Earth's surface.
+|| Projectile motion is a form of motion in which a projectile is thrown near the Earth's surface.
 |-
@@ Line 78: / Line 78: @@
 |-
 || 01:39
-|| Some examples of projectile motion are,  A baseball that has been thrown.
+|| Some examples of projectile motion are-  A baseball that has been thrown.
 |-
@@ Line 86: / Line 86: @@
 |-
 || 01:51
-|| Use the given link to download the simulation.
+|| Use the given '''link''' to download the simulation.
 |-
@@ Line 106: / Line 106: @@
 |-
 ||02:20
-|| The interface has four screens,
+|| The interface has four screens:
-'''Intro'''
+'''Intro''',
 |-
 || 02:25
-||'''Vectors'''
+||'''Vectors''',
 |-
 || 02:27
-||'''Drag '''
+||'''Drag ''',
 |-

@@ Line 1: / Line 1: @@
 {| border=1
-|   Time
+|'''Time'''
-|   Narration
+|'''Narration'''
 |-
@@ Line 13: / Line 13: @@
 |-
 ||00:11
-|| To follow this tutorial, Learner should be familiar with topics in high school physics.
+|| To follow this tutorial, learner should be familiar with topics in high school physics.
 |-
 ||00:18
-|| Here I am using, Ubuntu Linux OS version 14.04
+|| Here I am using,
 Java version 1.7
@@ Line 27: / Line 29: @@
 |-
 || 00:31
-|| Using this simulation we will, Determine how each parameter affects the trajectory of an object
+|| Using this simulation we will,
 |-
 || 00:39
-||Estimate where an object will land, given its initial conditions.
+||2. Estimate where an object will land, given its initial conditions.
 |-
 || 00:45
-||Determine how horizontal and vertical motion of a projectile are independent.
+||3. Determine how horizontal and vertical motion of a projectile are independent.
 |-
 ||  00:51
-||  Investigate the variables that affect the drag force.
+||4. Investigate the variables that affect the drag force.
 |-
 || 00:56
-||Examine the effect of drag force on the velocity and acceleration.
+||5. Examine the effect of drag force on the velocity and acceleration.
 |-
@@ Line 59: / Line 62: @@
 |-
 || 01:15
-|| '''Projectile motion''' is a form of motion, in which a '''projectile''' is thrown near the Earth's surface.
+|| Projectile motion, is a form of motion, in which a projectile is thrown near the Earth's surface.
 |-
@@ Line 87: / Line 90: @@
 |-
 || 01:55
-|| I have already downloaded ''' Projectile Motion PhET simulation''' to my '''Downloads''' folder.
+|| I have already downloaded '''Projectile Motion PhET simulation''' to my '''Downloads''' folder.
 |-
@@ Line 125: / Line 128: @@
 |-
 || 02:34
-||Using this screen let's study the factors affecting a projectile’s trajectory.
+||Using this screen, let's study the factors affecting a projectile’s trajectory.
 |-
@@ Line 141: / Line 144: @@
 |-
 || 02:53
-||We can change the height of the '''pedestal''' between 0 to 15 m.
+||We can change the height of the pedestal between 0 to 15 m.
 |-
@@ Line 149: / Line 152: @@
 |-
 || 03:03
-|| By default, '''cannon's angle '''is at 0 degrees.
+|| By default, cannon's angle is at 0 degrees.
 |-
@@ Line 225: / Line 228: @@
 |-
 || 04:49
-||Launch the '''projectile'''.
+||Launch the projectile.
 |-
@@ Line 275: / Line 278: @@
 |-
 || 05:55
-|| As an assignment, Change the values of cannon's angle and complete the tabular column.
+|| As an assignment,
 |-
@@ Line 299: / Line 304: @@
 |-
 || 06:27
-|| By default  slider is at '''15 meter per second Initial speed.'''
+|| By default  slider is at 15 meter per second '''Initial speed'''.
 |-
@@ Line 358: / Line 363: @@
 |-
 || 07:54
-||Uncheck the boxes.
+||Un-check the boxes.
 |-
@@ Line 378: / Line 383: @@
 |-
 || 08:23
-|| Next we will move on to''' Vectors''' screen.
+|| Next we will move on to ''' Vectors''' screen.
 |-
@@ Line 606: / Line 611: @@
 |-
 || 13:37
-|| Using this simulation we have, Determined how each parameter affects the trajectory of an object
+|| Using this simulation we have,
 |-
 || 13:45
-||Estimated where an object will land, given its initial conditions.
+||2. Estimated where an object will land, given its initial conditions.
 |-
 || 13:51
-||Determined how horizontal and vertical motion of a projectile are independent.
+||3.Determined how horizontal and vertical motion of a projectile are independent.
 |-
 ||13:58
-||Investigated the variables that affect the drag force.
+||4. Investigated the variables that affect the drag force.
 |-
 || 14:03
-||Examined the effect of drag force on the velocity and acceleration.
+||5. Examined the effect of drag force on the velocity and acceleration.
 |-
@@ Line 632: / Line 639: @@
 |-
 || 14:16
-|| The '''Spoken Tutorial Project '''team, conducts workshops using spoken tutorials and
+|| The Spoken Tutorial Project team, conducts workshops using spoken tutorials and
 gives certificates on passing online tests.