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Motion & Speed Study Guide



Multiple Choice (1 pt. ea.)
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 

A soccer ball takes 20 s to roll 10 m. What is the average speed of the soccer ball?
a.
0.5 m/s
c.
2 m/s
b.
5 m/s
d.
200 m/s
 

 2. 

On a speed-time graph, a horizontal line shows the change in speed is ____.
a.
–10
c.
10
b.
1
d.
0
 

 3. 

To describe velocity you need to know ____.
a.
speed and direction
c.
direction and acceleration
b.
speed and acceleration
d.
speed and time
 

 4. 

Acceleration is a change in ____.
a.
velocity
c.
displacement
b.
position
d.
speed
 

 5. 

Which of the following measurements would not be used to solve for average speed?
a.
total distance
c.
instantaneous speed
b.
starting location
d.
total time
 

 6. 

A jet plane traveled for 5 hours at 600 kilometers per hour. Which of the following equations should be used to find the distance the jet plane traveled?
a.
distance = acceleration/time
c.
distance = speed x time
b.
distance = acceleration x time
d.
distance = speed/time
 

 7. 

Your lab partner is doing the calculations for the lab activity you just finished. She asks you which would be the best way to find the total distance traveled by the toy car in your experiment. Which formula would you recommend?
a.
total distance = rate x time
b.
total distance = final position – starting position
c.
total distance = starting position + final position
d.
total distance = rate/time
 

 8. 

Speed is the rate of change in ____.
a.
velocity
c.
distance
b.
direction
d.
time
 

 9. 

Motion is change in ____.
a.
velocity
c.
position
b.
speed
d.
force
 
 
nar002-1.jpg
Figure 1
 

 10. 

Figure 1 summarizes the motion of an object. During which time interval was the object moving fastest?
a.
0 to 1 s
c.
2 s to 3 s
b.
1 s to 2 s
d.
3 s to 4 s
 
 
nar003-1.jpg
Figure 2
 

 11. 

Figure 2 describes the motion of an object. According to the graph, about how long did the object take to move 40 m?
a.
2 s
c.
4 s
b.
3 s
d.
5 s
 

 12. 

Figure 2 summarizes the motion of an object. Which of the following statments best describes the motion of the object?
a.
The object accelerated at a constant rate.
b.
The average speed of the object was less than 1 m/s.
c.
The object moved at a constant speed.
d.
The instantaneous speed of the object was greater than 1 m/s.
 

 13. 

Which of the following sets of directions is likely to be successful in guiding someone to a nearby location?
a.
Follow the highway to the next major crossroad.
b.
Follow the main road back to the next major crossroad, and then turn left.
c.
Go 3 blocks West to the interstate highway, and then travel 6 km North.
d.
Go 6 km past the mall on the interstate highway.
 

 14. 

Acceleration involves a change in ____.
a.
time
c.
speed
b.
direction
d.
both b and c
 

 15. 

When a car slows down at a traffic light, it is ____.
a.
decreasing its displacement
c.
changing direction
b.
accelerating
d.
traveling at constant velocity
 

 16. 

Which of the following best describes how constant velocity is shown in a speed-time graph?
a.
a line curving up
c.
a straight horizontal line
b.
a line curving down
d.
a straight diagonal line
 
 
nar004-1.jpg
Figure 4
 

 17. 

Figure 4 summarizes the motion of a car. Which term best describes the velocity of the car?
a.
0.2 h
c.
50 km/h East
b.
10 km East
d.
500 km/h2
 

 18. 

Figure 4 summarizes the motion of a car. If the car’s speed is an average speed, what is the least amount of time the car will need to cover the distance given?
a.
40 min
c.
5.0 h
b.
0.2 h
d.
60 min
 

 19. 

What is the term for speed at any instant in time?
a.
variable speed
c.
constant speed
b.
average speed
d.
instantaneous speed
 

 20. 

When an object is at rest, what is its speed?
a.
2 m/s
c.
3 m/s
b.
1 m/s
d.
0 m/s
 

 21. 

You travel 200 km in 2 h. Your ____ speed is 100 km/h.
a.
average
c.
constant
b.
initial
d.
instantaneous
 

 22. 

Your mother picks you up at school. It takes 10 minutes for the 5-km drive home. Which of the following can you calculate a value for with the information given?
a.
average speed
c.
acceleration
b.
instantaneous speed
d.
velocity
 

 23. 

When you graph the motion of an object, you put ____ on the horizontal axis and ____ on the vertical axis.
a.
distance, time
c.
time, distance
b.
time, speed
d.
speed, time
 

 24. 

The distance traveled divided by the time taken to travel the distance is ____.
a.
speed
c.
average speed
b.
mass
d.
momentum
 

 25. 

____ is rate of change of position.
a.
Velocity
c.
Acceleration
b.
Displacement
d.
Speed
 

 26. 

Which of the following sets of directions is most specific?
a.
Rio City is two hills over from the hill Southwest of here.
b.
Rio City is across the river from here.
c.
Rio City is 25 km Southwest of here.
d.
Rio City is about 25 km from here.
 

 27. 

Which describes how velocity changes with time?
a.
acceleration
c.
gravity
b.
inertia
d.
average speed
 

 28. 

You hear that a storm is moving 15 km/h north. You have been given the storm's ____.
a.
constant speed
c.
velocity
b.
acceleration
d.
average speed
 
 
nar001-1.jpg
Figure 6
 

 29. 

Figure 6 is a graph that summarizes the motion of a person who walked at a constant speed for 10 minutes. What is the slope of the graph?
a.
300 km/min
c.
60 km/min
b.
500 km/min
d.
5 km/min
 

 30. 

When you interpret a distance-time graph, the speed of the object is determined by _____.
a.
finding the slope of the graph line
b.
looking at the values on the y-axis
c.
looking at the values on the x-axis
d.
finding the length of the graph line
 

Completion
Complete each sentence or statement.
 

 31. 

____________________ is the change in velocity divided by the change in time.
 

 

 32. 

To calculate ____________________ you divide distance traveled by the time it takes to travel that distance.
 

 

 33. 

The average speed of a cat that runs 1 kilometer in 2 minutes is ____________________ m/s.
 

 

 34. 

A distance-time graph shows a horizontal line. This means that the velocity is ____________________.
 

 

 35. 

Three ways to accelerate an object are to ____________________, ____________________, or ____________________.
 

 

 36. 

If your speed changes from 10 km/h to 6 km/h, you have a(n) ____________________ acceleration.
 

 

 37. 

The speed you read from your speedometer is your ____________________.
 

 

 38. 

The acceleration of an object can be shown on a(n) ____________________ graph.
 

 

 39. 

Speeding up, slowing down, and going around curves are examples of ____________________.
 

 

Matching  (1 pt. ea.)
 
 
Match the units with the descriptions below.
a.
m/s2
d.
h
b.
m/s
e.
s
c.
m
 

 40. 

a unit of average speed
 

 41. 

a large unit of time
 

 42. 

a unit of distance
 

 43. 

a small unit of time
 

 44. 

a unit of acceleration
 



 
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