Name __________________________ Date _______________ Period _______
Lab 9 Physics, Constant Acceleration Review
In the space provided, write the letter of the choice that best completes the statement or answers the question.
_____1. If a wind surfer changes speed or direction or both speed and direction, you can say that she:
a. is motionless. b. is traveling at a constant velocity. c. has accelerated. d. had a change of heart.
_____2. A rugby player running to make a score slides across the goal line and comes to a stop inside the scoring area.
The rate at which he slows down is called:
a. free fall. b. gravity. c. deceleration. d. uniform.
_____3. A little red Corvette toy car rolling down an inclined track can have an acceleration of 400
a. cm/cm/sec. b. sec/sec/cm. c. cm/sec. d. cm/sec/sec.
_____4. A softball player begins swinging a softball bat to hit a softball. The rate of change in velocity is called:
a. velocity. b. displacement. c. acceleration. d. equilibrium.
_____5. Toby glances at the speedometer on his bicycle as he begins to coast downhill (not pedaling). He is traveling at
12 miles per hour initially and then 20 miles per hour exactly 4 seconds later. His acceleration is:
a. 2 mph every sec. b. 3 mph every sec. c. 5 mph every sec. d. 8 mph every sec.
_____6. The slope of a position versus time graph represents velocity. The slope of a velocity versus time graph
represents:
a. acceleration. b. force. c. position. d. speed.
____
Use the graph at right to answer the following questions:
7. What is the acceleration?
a. -0.5 m/s/s b. 4 m/s/s c. 1.5 m/s/s d. 2.5 m/s/s
____
8. What is the initial velocity of the object?
a. 0 m/s b. 1 m/s c. 3 m/s d. 4 m/s
____
9. What is the velocity of the object at t=2s?
a. 13 m/s b. 17 m/s c. 9 m/s d. 5 m/s
10
9
8
7
6
5
4
3
2
1
v(m/s)
1
2
3
4
5
6
7
8
9 t(s)
Time (s)
_____10. Which of the following is an example of acceleration?
a. A biker is moving at 2 m/s and increases her speed to 10 m/s. b. A football player is running at a speed of 8 m/s
toward the end zone. c. A swimmer swims at a constant speed of 3 m/s. d. None of the above.
_____11. A car that is accelerating at 2 km/hr/second is:
a. traveling 2 km each second. b. traveling 2 km/hr at each second c. increasing its velocity at 2 km/hr every
hour. d. increasing its velocity at 2 km/hr every second.
_____12. Which of the following is an example of an acceleration of 0 m/s/s?
a. A swinging tennis racket is moving at 3 m/s and increases its speed to 13 m/s. b. A jockey is riding on his horse
at a speed of 20 m/s and comes to a stop after the end of the race. c. A skydiver falls at a constant speed of 5 m/s.
d. None of the above.
_____13. If you multiply 60 m/s/min by 4 min, what will be the units in the answer?
a. s/m
b. m/s
c. s/min
d. hr
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Name __________________________ Date _______________ Period _______
Lab 9 Physics, Constant Acceleration Review
14. An object moves with a constant acceleration of 5 m/s2. Which of the following statements is true?
a. The object’s velocity stays the same b. The object moves 5 m each second
c. The object’s acceleration increases by 5 m/s2 each second
d. the object’s velocity increases by 5 m/s each second
15. An object is released from rest and falls in the absence of air resistance. Which of the following is true about
its motion?
a. Its acceleration is 0 b. Its acceleration is constant c. Its velocity is constant d. Its acceleration is increasing
t=0s
t=1s
t=2s
t=3s
m
m
16.
The following refer to the diagram above that shows the motion map for a rolling ball,
a.
What is the ball’s acceleration? ___________
b.
In what direction is the ball accelerating? ___________
c.
Describe the motion of the ball. (what changes, by how much, how often?)
17. Below is a position vs. time graph.
9
8
7
6
5
4
3
2
1
x(m)
Sketch the velocity vs. time graph below that matches this graph
10 v(m/s)
9
8
7
6
5
4
3
2
1
1 2 3 4 5 6 7 t(s)
1
2
3
4
5
6
7
8
9 t(s)
18. Define acceleration in three ways. (a. with a graph, b. in words, c. in a mathematical equation)
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Name __________________________ Date _______________ Period _______
Lab 9 Physics, Constant Acceleration Review
19. A runner is moving at 9 m/s when she begins to slow down at 3 m/s/s. Complete the following.
1. Velocity vs. Time Graph:
At what time will her velocity = 0 m/s?
10 v(m/s)
9
8
7
6
5
4
3
2
1
1 2 3 4 5 6 7 8 9 t(s)
20. A formula 1 race car takes off from the starting line. The table below shows how his speed changes during the first
lap.
a. Complete the table
b. Determine the acceleration.
c. Describe the motion without using the term “acceleration”.
Acceleration = _______________
Velocity
Time (s)
(m/s)
Describe the motion:
0
0
1
8
2
16
3
4
5
6
21. A hockey puck slides across the ice towards the goal with a speed of 20 m/s. At time = 0s, the puck accelerates at 2 m/s/s. Complete the table.
a. Complete the table
b. Describe the motion without using the term “acceleration”.
Acceleration = _-2 m/s/s ______
Velocity
Time (s)
(m/s)
Describe the motion:
0
1
2
3
4
5
6
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Name __________________________ Date _______________ Period _______
Lab 9 Physics, Constant Acceleration Review
Remember: a = (vf – vo)/ t
t = (vf – vo)/ a
vf = vo + at
vo = vf - at
22. After crossing the finish line in a sprint, a runner slows her speed from 9 m/s to 0 m/s in 3 s.
What is her acceleration?
Solution-(Show relationships, substitutions,
Looking For (i.e. t=?)
solutions, and units)
Given (variable =, i.e. t=5s)
Equation
23. An instrument is dropped from the top of a rock on Mars. It accelerates in free fall at 4 m/s/s. What is its velocity 5 seconds after it is released?
Solution-(Show relationships, substitutions,
solutions, and units)
Looking For (i.e. t=?)
Given (variable =, i.e. t=5s)
Equation
24. A car accelerates from 20 m/s to 60 m/s at a rate of 5 m/s/s. How much time does this motion require?
Solution-(Show relationships, substitutions,
solutions, and units)
Looking For (i.e. t=?)
Given (variable =, i.e. t=5s)
Formula
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