S432 Physics Kinematics Test
Lederhouse/Bryant/Letzel
Name__________________
Period 1 2 3 4 5 6 7 8
Directions: Choose the best answer for each questions. Mark up your test!!
1. Suppose a car is moving in a straight line and steadily increases its speed. It moves from
35 km/h to 40 km/h the first second and from 40 km/h to 45 km/h the next second.
What is the car’s acceleration?
A) 5 km/h/s
B) 10 km/h/s
C) 35 km/h/s
D) 40 km/h/s E) 45 km/h/s
2. An object travels 8 meters in the first second of travel, 8 meters again during the
second second of travel, and 8 meters again during the third second. Its acceleration is
A) 0 m/s/s
B) 8 m/s/s
C) 16 m/s/s D) 32 m/s/s E) none of the above
3. If an object has a negative velocity, that means it is
A) slowing down
B) going back towards
C) speeding up while going forward
D) all of these
4. As an object falls freely on Earth, its
A) velocity increases.
B) acceleration increases.
C) both a and b
D) none of the above
5. A car accelerates at 2 m/s2. Assuming the car starts from rest, how much time does it
need to accelerate to a speed of 30 m/s?
A) 2 seconds
B) 15 seconds
C) 30 seconds
D) 60 seconds
E) none of the above
6. A ball is dropped from a cliff and falls a distance of 20 m to the ground. Determine
the velocity it hits the ground at and the time for the ball to fall.
A) v = -10 m/s, t = 2 s
B) v = 20 m/s, t = 4 s
C) v = -20 m/s, t = 2 s
D) v = 10 m/s, t = 2 s
7. Ten seconds after starting from rest, a freely falling object will have a speed
of about
A) 10 m/s B) 50 m/s
C) 100 m/s
D) 500 m/s
E) more than 500 m/s
8. A car accelerates from rest to a speed of 8 m/s over a distance of 16 m. What is the
acceleration of the car?
A) -10 m/s2 B) -2 m/s2 C) 0.5 m/s2 D) 2 m/s2 E) no acceleration, v = 8 m/s
9. Consider drops of water leaking from a water faucet each second. As the drops
fall, they
A) get closer together
B) get farther apart
C) remain at a relatively fixed distance from each other
10. On the way to school, the bus speeds up from 20 m/s to 36 m/s in 4 seconds. What
distance does the bus cover in this time frame?
A) 80 m
B) 112 m
C) 64 m
D) 144 m
11. A dolphin swims 1.85 km/h. How far has the dolphin traveled after 0.60 h?
A) 1.1 km B) 2.5 km
C) 0.63 km D) 3.7 km
12. A heavy object and a light object are dropped at the same time from rest in a vacuum
(a place where there is no air). The heavier object reaches the ground
A) sooner than the lighter object
B) at the same time as the lighter object
C) later than the lighter object
13. A bullet is fired straight down from the top of a high cliff. Neglecting air resistance,
the acceleration of the bullet in meters per second per second is
A) less than -9.8 m/s/s
B) -9.8 m/s/s
C) more than -9.8 m/s/s
14. You are driving along Schaumburg Road when the traffic light in front of you turns red
so you come to a stop. Which of the following are negative while you are stopping?
A) distance traveled
B) acceleration
C) velocity D) speed
15. The slope of a velocity vs. time graph tells you
A) maximum velocity B) acceleration C) distance traveled
D) where you are
16. Which graph does not show constant positive acceleration?
A)
B)
C)
D)
17-22 Use the position-time graph of a moving object
to answer the questions below. Mark all answers
that are true.
17. Which section(s) shows the object moving back
towards at constant velocity?
18. Which section(s) shows the object at rest?
19. Which section(s) shows the object accelerating?
20. Which section(s) show the fastest speed reached by
the object?
21. Which section(s) show the object moving forward with a constant velocity?
22. Which section(s) show the object moving towards the starting position?
23-28 Use the velocity-time graph of a moving object to answer the questions below:
Mark all answers that are true.
23. Which section(s) shows the object moving with
a constant velocity?
24. Which section(s) shows the object at rest?
25. Which section(s) shows the object accelerating?
26. Which section(s) show the highest speed
reached by the object?
time
27. Which section(s) show the object slowing down?
E
28. Which section(s) show the object traveling
toward the point of origin?
29. Use the data in the following table to determine the unknown distance that a
person Crabwalks in 25.2 seconds. Assume that they maintain an average velocity
based on the data provided.
Trial
1
2
3
4
A) 21496 cm
Motion
Crabwalking
Crabwalking
Crabwalking
Crabwalking
Distance (meters)
20
20
20
?
B) 7165 cm
C) 7308 cm
Time (seconds)
6.90
7.23
7.00
25.2
D) 6407 cm
30-31. Use the following data collected from the Galileo Lab to answer the next two
questions.
Time (s)
Velocity (m/s)
Δ V (m/s)
0.3
0.3
xxxxx
0.5
0.47
0.7
0.64
0.9
0.81
1.1
0.98
1.3
1.15
1.5
1.32
30. Predict the velocity of the ball after 2.1 seconds.
A) 0.17 m/s
B) 1.32 m/s
C) 1.90 m/s
D) 1.83 m/s
31. From the data, which of the following is true?
I. the velocity increases
II. the change in velocity is equal
III. there is an increasing acceleration
A) I and II are true
C) I and III are true
B) I, II, and III are true
D) II and III are true
32. How many Megameters are equal to 953.67 cm?
A) 9.5367 x 10-4
B) 9.5367 x 10-6
C) 9.5367 x 108
D) 9.5367 x 1010
33. How many nanometers are in 5.3 x 102 km?
A) 5.3 x 1011
B) 5.3 x 108
D) 5.3 x 10-10
E) 5.3 x 10-7
34. Convert 50 km/hr into m/s.
A) 0.014 m/s
B) 13. 89 m/s
C) 5.3 x 1014
C) 180 m/s
D) 830 m/s
35. A car drives for 35 km in 45 seconds. What is the average velocity of the car?
A) 0.78 m/s
B) 777.8 m/s
C) 7.78 m/s
D) 0.0078 m/s
36. As an object falls freely in a vacuum, its
A) velocity increases
B) acceleration increases.
C) both A and B
D) none of the above
37. Suppose an object is in free fall. Each second the object falls
A) a larger distance than in the second before.
B) with the same average speed.
C) with the same instantaneous speed.
D) the same distance as in the second before.
E) none of the above
38. A ball tossed vertically upward rises, reaches its highest point, and then falls back to
its starting point. During this time the acceleration of the ball is always
A) directed downward
B) directed upward
C) in the direction of motion
D) opposite its velocity
39. A ball is thrown straight up. At the top of its path its instantaneous speed is
A) 0 m/s.
B) about 50 m/s.
C) about -10 m/s.
D) about 10 m/s.
E) dependent on the speed it was thrown at.
40. If an object were equipped with a speedometer and allowed to fall freely on a planet
where the acceleration due to gravity is 20 m/s2 the reading on the speedometer
increases each second by
A) 40 m/s.
B) a rate that depends on its initial speed.
C) 10 m/s.
D) 30 m/s.
E) 20 m/s.
Physics 432
Bryant/ Lederhouse/ Letzel
Name____________________________
Period___________________
KINEMATIC TEST WRITTEN SECTION
BE SURE TO USE GUESS METHOD. SHOW ALL OF YOUR WORK!!! YOU MAY
USE -10 m/s/s AS GRAVITY.
1. A car traveling at 40.4 m/s skids to a stop in 3.34 s. Determine the skidding distance of the car. (Assume uniform acceleration.)
2. A bullet is moving with a speed of 400 m/s when it enters a lump of moist clay and comes to a stop. The bullet penetrates a
distance of 0.075 m. Determine the acceleration of the bullet while coming to rest in the clay. (Assume uniform acceleration.)
3. A race car accelerates uniformly from 10.5 m/s to 63.4 m/s at a rate of 7.8 m/s2 Determine the time to bring about this change in
speed.
4. Picket Fence Free Fall Lab
Using the graphs above, explain:
a) the motion of the picket fence as described by each graph (interpret the graph). Be sure to
include the appropriate words: slope, velocity, acceleration, increase, decrease, constant,
positive, and/or negative in your explanations.
D VS. T
V VS. T
b) Look at the linear fit data and explain the significance of the slope (m) in the velocity vs. time
graph and how it relates to the world around us.
c) On the v vs t graph above, sketch how throwing the picket fence downward (as opposed to
dropping it) would alter the graph. Explain any changes that occur.
5. Convert the distance vs. time graph to a velocity vs. time graph. Pay attention to specific
values. Show all your work!