Chapter 2: Describing Motion: Kinematics in One Dimension
Physlet® Problems



1.  

Be sure the simulation has finished loading before you click begin.

Physicists use arrows to represent many things in diagrams. What vector quantity is being represented by the arrow in this simulation?  Begin
displacement
velocity
acceleration
speed

2.  


A hockey puck bounces off a wall and returns to its original starting point where it is stopped as shown in the animation. What is the average speed of the puck during the time it is in motion, t=0 to t=5? Position is shown in feet, and time is in seconds.
Begin
0 ft/s
4.0  ft/s
4.8  ft/s
6.0  ft/s

3.  


What is the average velocity of the puck during the time it is in motion?
Begin 
0 ft/s
4.0  ft/s
4.8  ft/s
6.0  ft/s

4.  


What is the instantaneous velocity of the puck when t = 3 s?
Begin
4.8  ft/s
-4.0  ft/s
-4.8  ft/s
None of the above

5.  


An object is shot straight up into a thin atmosphere (not necessarily that of Earth) with a certain initial velocity as shown in the animation. If the object's initial velocity is doubled, what will be it's maximum vertical displacement (position is shown in meters and time is in seconds)?
Begin
68.0 m
116 m
136 m
58.0 m

6.  


An object is traveling at a constant speed for one second when it slows to a stop with constant acceleration. What is its acceleration during the time it is slowing down? (position is shown in meters, and time is in seconds)
Start
-3.6 m/s2
-6.2 m/s2
-2.8 m/s2
-7.2 m/s2

7.  

What is the acceleration of the red mass?
Begin
5 m/s2
-5 m/s2
-9.8 m/s2
-20 m/s^2

8.  

What is the acceleration of the green mass?
Begin
5 m/s2
-5 m/s2
-9.8 m/s2
-20 m/s^2

9.  



Which object follows the x vs. t curve shown?
Begin
purple object
red object
neither of the above

10.  


Which object follows the vx vs. t curve shown?
Begin
orange object
red object
green object

11.  


An object travels as shown in the animation. What is its displacement after two seconds if the position is shown in meters?
Begin
8.5 m
-8.5 m
-13.5 m
13.5 m

12.  

What is the total distance traveled by the object after two seconds if the position is shown in meters?
Begin
18.5 m
-18.5 m
-13.5 m
13.5 m

13.  


An object travels as shown in the animation. What is its average velocity from time t=0 to time t=2? Position is shown in meters and time in seconds.
Begin
-6.75 m/s
6.75 m/s
-8.5 m/s
-4.25 m/s

14.  


What is the average speed of the object from time t=0 to t=2 if time is shown in seconds and position is shown in meters?
Begin
-6.75 m/s
9.25 m/s
-8.5 m/s
-4.25 m/s

15.  


An object travels as shown in the animation. What is its average acceleration for the first second? The position is shown in meters.
Begin
0 m/s2
5.0 m/s2
2.5 m/s2
10.0 m/s2

16.  


An object travels as shown in the animation. What is its average acceleration from t=1 to t=3 seconds? The position is shown in meters.
Begin
0 m/s2
5.0 m/s2
-10.0 m/s2
10.0 m/s2

17.  




A puck travelling at constant speed hits and then bounces off a wall as shown. If the puck was in contact with the wall for 0.001 seconds, what was its average acceleration during the time it was in contact with the wall?
Begin
0 m/s2
-10 m/s2
6,000 m/s2
-10,000 m/s2

Physlets used by permission of Wolfgang Christian, Davidson College. Physlet Problems ©Prentice Hall, Inc; written by Aaron Titus (North Carolina State University) and Wolfgang Christian, Davidson College.


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