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CAB Remediation

Total questions: 147

Worksheet time: 4hrs 22mins

Name
Class
Date
1.

What is the difference between distance and displacement?

a)

Displacement is the total length of the path traveled

b)

Distance is the same as displacement

c)

Distance is the total length of the path traveled, while displacement is the shortest distance between the initial and final positions.

d)

Distance is the shortest distance between the initial and final positions

2.

Define speed and average velocity.

a)

Speed is the distance traveled per unit of time, while average velocity is the displacement divided by the time taken.

b)

Speed is the rate of change of position, while average velocity is the rate of change of displacement.

c)

Speed is the displacement divided by the time taken, while average velocity is the distance traveled per unit of time.

d)

Speed is the magnitude of velocity, while average velocity is the total distance traveled.

3.

If an object is moving with a constant speed of 20 m/s, what is its velocity?

a)

30 m/s

b)

10 m/s

c)

40 m/s

d)

20 m/s

4.

What is acceleration and how is it different from velocity?

a)

Acceleration is the same as velocity.

b)

Acceleration is the rate of change of velocity over time.

c)

Acceleration is a constant value.

d)

Acceleration is the rate of change of speed over distance.

5.

A car starts from rest and reaches a speed of 30 m/s in 5 seconds. Calculate its acceleration.

a)

3 m/s^2

b)

10 m/s^2

c)

6 m/s^2

d)

15 m/s^2

6.

If an object is moving with a velocity of 10 m/s, what is its speed?

a)

5 m/s

b)

20 m/s

c)

10 m/s

d)

15 m/s

7.

How is instantaneous velocity different from average velocity?

a)

Instantaneous velocity is the velocity of an object at rest

b)

Instantaneous velocity is the velocity of an object at a specific point in time.

c)

Instantaneous velocity is the same as average velocity

d)

Instantaneous velocity is the velocity of an object over a long period of time

8.

Explain the relationship between distance, displacement, and speed in one dimension motion.

a)

Distance is the change in position, displacement is the total length covered, and speed is the acceleration of the object.

b)

Distance is the total length covered by an object, displacement is the change in position from the initial to the final point, and speed is the rate at which the object covers the distance.

c)

Distance is the total length covered by an object, displacement is the rate at which the object covers the distance, and speed is the change in position from the initial to the final point.

d)

Distance is the rate at which the object covers the distance, displacement is the total length covered, and speed is the change in position from the initial to the final point.

9.

The sum of all movements from start to the end of motion is best described as____.

a)

distance

b)

displacement

c)

motion

d)

donkey

10.

The change in an objects position from the final position to initial position.

a)

displacement

b)

distance

c)

motion

d)

reference point

11.

A man walks 5 miles forwards, 6 miles backwards and then 2 miles forwards. What is his displacement?

a)

1 mile forward

b)

13 miles

c)

3 miles forward

d)

1 mile

12.
Sara walks from Point A to Point B. Which is true?
a)
Distance and displacement are EQUAL
b)
Distance is less than displacement
13.
Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home.  What is Bill's distance?
a)
0 meters
b)
400 meters
c)
800 meters
d)
1600 meters
14.

Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home.  What is Bill's displacement?

a)
0 meters
b)
400 meters
c)
800 meters
d)
1600 meters
15.

A cross-country skier moves 10 meters eastward, then 14 meters westward, and finally 6 meters eastward.

What is the magnitude and direction of the displacement?

a)

30 meters east

b)

16 meters east

c)

2 meters west

d)

2 meters east

16.

Mr. D decided that it was time to get his fat-self in shape so he decided to go and run a mile around the track (4 laps).  However, after running just one lap, he collapsed in the same spot he started.  

What was the displacement?

a)

0 mi

b)

1/4 mi

c)

1/4 mi east

d)

unknown

17.

Jerry walked from home to school, then from the school to the park. What is his total distance?

a)

2 km

b)

5 km

c)

8 km

d)

10 km

18.

Scalar quantities

a)

only need a number

b)

Need a number and direction

c)

Need scales

19.

Vector quantities

a)

only need a number

b)

Need a number and direction

c)

Need arrows

20.

A dog walks 12 meters to the east and then turns around and walks 16 meters back to the west.

What is the displacement of the dog?

a)

28 meters

b)

4 meters

c)

4 meters west

d)

4 meters east

21.

Jerry walked from home to school, then from the school to the park. What is his total displacement?

a)

2 km east

b)

5 km

c)

8 km

d)

2 km

22.
Distance and direction of an object's change in position from a starting point
a)
displacement
b)
distance
c)
motion
d)
reference point
23.
 Jermaine runs exactly 2 laps around a 400 meter track. What is the displacement?
a)

800

b)

400

c)

0

d)

200

24.
Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home.  What is Bill's distance?
a)
0 meters
b)
400 meters
c)
800 meters
d)
1600 meters
25.

Jerry walked from home to school, then from the school to the park. What is his total distance?

a)

2 km

b)

5 km

c)

8 km

d)

10 km

26.

Jerry walked from home to school, then from the school to the park. What is his total displacement?

a)

2 km E

b)

5 km N

c)

8 km S

d)

10 km W

27.
A person walks 50 meters directly north, stops, and then travels 32 meters directly south.  What is their displacement?
a)

82 meters N

b)

18 meters N

c)

18 meters S

d)

82 meters S

28.

A car drives 84 meters forward.  It's displacement and distance would be the same magnitude.

a)

True

b)

False

29.

A place or object (like a stop sign or mailbox) used for comparison to determine if another object is in motion is called a

a)

comparison point

b)

frame of reference

c)

point of view

d)

motion detector

30.
The unit for distance is:
a)
m
b)
s
c)
m/s
31.
After completing one trip on a roller coaster, the roller coaster's ________ is zero.
a)
displacement
b)
reference point
c)
length
d)
distance
32.

Relative motion

a)

the motion of an object in comparison to other objects in a specific frame of reference

b)

the point of view used to measure the position and movement of objects

c)

how fast something moves

d)

the distance

33.

The best reference points are stationary (not moving).

a)

true

b)

false

34.

If you walk to your friends house 500 meters down the street. What is the DISTANCE you have traveled?

a)

500 meters

b)

1000 meters

c)

250 meters

d)

0 meters

35.

Click on image to make it bigger.

a)

A

b)

B

c)

C

d)

D

36.

You go on a hike on the blue path from point A to point B. (Click on image to make it larger)


What DISTANCE did you travel?

a)

4.6 km

b)

9.2 km

c)

10.3 km

d)

0 km

37.

Speed = _______________

a)

Distance + time

b)

Distance – time

c)

Distance x time

d)

Distance / time

38.

This occurs when an object speeds up, slows down, or changes direction.

a)

Speed

b)

Velocity

c)

Acceleration

39.

Another way to explain the speed and direction of a object would be to describe it’s ________

a)

Speed

b)

Velocity

c)

Acceleration

40.

Velocity = _______________

a)

Speed – direction

b)

Speed + direction

c)

Speed x direction

d)

Speed / direction

41.
Avery likes to walk 30 feet in 10 seconds. What is her speed?
a)
3 feet/sec
b)
6 feet/sec
c)
10 feet/sec
d)
2 feet/sec
42.

At what speed would a car have to move in order to travel 20 kilometers in 2 hours.

a)

5 km/hr

b)

10 km/hr

c)

20 km/hr

d)

40 km/hr

43.
Changes in our speed, direction or both are called _________.
a)
gravity
b)
changes
c)
acceleration
d)
displacement
44.
What is the definition of velocity?
a)
A force that opposes motion
b)
Uniform circular motion
c)
The speed of an object in a particular direction
45.
If you slow down on your bicycle, you accelerate.
a)
TRUE
b)
FALSE
46.
Changing the speed and changing the direction of your bicycle are both examples of acceleration.
a)
TRUE
b)
FALSE
47.
You ride your bike around the block at a constant speed of 11 km/h.
a)
Acceleration occurred because speed increased.
b)
Acceleration occurred because speed decreased.
c)
Acceleration occurred because you changed directions.
48.
A measurement of how fast an object is moving
a)
Velocity
b)
Speed
c)
Vector
d)
Acceleration
49.

Which of the following is a unit of speed?

a)

km/hr

b)

Minutes

c)

Centimeters

d)

meters

50.

A car initially traveling at 8.0 meters per second doubles its speed while traveling in a northeast direction.

Students used a table to record the initial and final conditions for speed and velocity.

Which table is correct?

a)

b)

c)

d)

51.

Which statement best describes the motion of the toy vehicle during the first 30 seconds of the investigation?

a)

The vehicle was traveling at a constant speed

b)

The vehicle was accelerating at a constant rate

c)

The speed of the vehicle was increasing

d)

The acceleration of the vehicle was increasing

52.

Which statement best describes the cart?

a)

The cart was stationary with a velocity of 0 m/s for the entire 7 seconds

b)

The cart was stationary except for a short burst of acceleration of 0.5 m/s2

c)

The cart moved at a constant velocity of 0.5 m/s for the entire 7 seconds

d)

The cart accelerated at a constant rate of approximately 0.8 m/s2

53.

Match the following

a)

Speed

1.

30 m/s

b)

Velocity

2.

30 m/s east

c)

Acceleration

3.

30 m/s2

54.

Which of the following best describes the velocity of an object?

30 ​ (a)  

Choose from the below words
m/s east
m/s
m east
m/s2
55.

What is the difference between the velocity and the speed of an object?

a)

Velocity is the change in distance over time, while speed is the change in velocity over time.

b)

Velocity has a direction associated with it, while speed has no specific direction

c)

Velocity has no direction associated with it, while speed has a specific direction

d)

Velocity is the change in speed over time, while speed is the change in distance over time

56.

The pickup truck has a changing velocity because the pickup truck -

a)

can accelerate faster than the other two vehicles

b)

is traveling in the opposite direction from the other two vehicles

c)

is traveling on a curve in the road

d)

needs a large amount of force to move

57.

Which TWO of the following are vectors?

a)

Distance

b)

Displacement

c)

Speed

d)

Velocity

58.

Which of the following is an acceptable velocity measurement?

a)

25 m/s North

b)

25 m/s

c)

25 m

d)

25 m North

59.

An object travels 100 m North then 50 m South. What total distance did it travel?

a)

150 m

b)

50 m North

c)

50 m South

d)

150 m North

60.

An object travels 100 m North then 50 m South. What is its total displacement?

a)

150 m

b)

50 m North

c)

50 m South

d)

150 m North

61.

A runner runs 2 laps around a track with a circumference of 400 m. What is their total distance?

a)

800 m

b)

0

c)

400 m

d)

400 m North

62.

A runner runs 2 laps around a track with a circumference of 400 m. What is their total displacement?

a)

800 m

b)

0

c)

400 m

d)

400 m North

63.

Which of these is defined by the slope of a position-time graph?

a)

velocity

b)

speed

c)

distance

d)

displacement

64.

Which graph shows an object moving forward at a constant speed?

a)

A

b)

B

c)

C

d)

D

65.

Which graph shows an object moving backward at a constant speed?

a)

A

b)

B

c)

C

d)

D

66.

Which graph shows an object at rest?

a)

A

b)

B

c)

C

d)

D

67.

Which graph shows an object accelerating while moving forward?

a)

A

b)

B

c)

C

d)

D

68.

Which position-time graph represents the fastest speed (assume all graphs use the same scale)?

a)

A

b)

B

c)

C

d)

D

69.

The speedometer in your car measures __________________ speed.

a)

average

b)

instantaneous

c)

light

d)

ludicrous

70.

Which shows an object moving at constant speed?

a)

A

b)

B

c)

C

71.

Which shows an object speeding up?

a)

A

b)

B

c)

C

72.

Which shows an object slowing down?

a)

A

b)

B

c)

C

73.

What is the difference between speed and velocity?

a)

Speed involves a runaway city bus, while Velocity involves motorcycle racing

b)

Speed stars Keanu Reeves and Sandra Bullock, while Velocity stars a bunch of people I have never heard of

c)

speed does not involve a direction, while velocity does

d)

Speed was released in 1994, Velocity in 2007

74.

Velocity (as opposed to speed) can be found from the slope of a position-time graph because...

a)

the sign of the slope indicates the direction.

b)

direction is not needed.

c)

velocity is a scalar and speed is a vector.

d)

slope has no direction.

75.

Average speed/velocity for a trip can always be found by calculating the mathematical average of the individual speeds/velocities.

a)

True

b)

False

76.
What kind of acceleration is shown here?
a)
positive
b)
negative
c)
none
d)
varies
77.
What kind of acceleration is shown here?
a)
positive
b)
negative
c)
none
d)
varies
78.
What kind of acceleration is shown here?
a)
none
b)
positive
c)
negative
d)
varies
79.
What is the velocity?
a)
not moving
b)
increasing
c)
positive
d)
negative
80.
What is the velocity?
a)
positive
b)
negative
c)
decreasing
d)
increasing
81.
What is the velocity?
a)
0 m/s
b)
positive m/s
c)
negative m/s
d)
decreasing
82.
Is the speed constant or non-constant?
a)
constant
b)
non-constant
83.
Is the speed constant or non-constant?
a)
constant
b)
non-constant
84.
Is the speed constant or non-constant?
a)
constant
b)
non-constant
85.
Is the speed constant or non-constant?
a)
constant
b)
non-constant
86.
Which section of the graph shows decreasing velocity?
a)
CD
b)
DE
c)
EF
d)
GH
87.
Which section of the graph shows increasing velocity?
a)
AB
b)
BC
c)
DE
d)
EF
88.
Which section of the graph shows constant velocity?
a)
AB
b)
BC
c)
EF
d)
GH
89.
Which section of the graph shows acceleration?
a)
AB
b)
BC
c)
EF
d)
FG
90.
Which section of the graph shows deceleration?
a)
AB
b)
BC
c)
EF
d)
GH
91.
Acceleration: is the rate of change in ___________.
a)
speed
b)
distance
c)
velocity 
d)
displacement 
92.

A roller coasters accelerates from an initial speed of 6.0 m/s to a final speed of 70 m/s over 4 seconds. What's the acceleration?

a)

24 m/s2

b)

18 m/s2

c)

16 m/s2

d)

16 m/s

93.
A car accelerates from a standstill to 70 m/s in 10 seconds.  What is the acceleration?
a)
0.7m/s2
b)
7m/s2
c)
14m/s2
d)
none of the above
94.
The SI unit for acceleration is
a)
mph
b)
ft/sec2
c)
m/s2
95.
Why does a car accelerate as it round a corner at a constant speed?
a)
Its direction changes
b)
It doesn't
c)
It slows down
d)
Its speeds up  
96.
Velocity is both ____ and _____. 
a)
speed , direction 
b)
direction, mass
c)
volume, density 
d)
direction, magnitude 
97.
In each of the following cases, determine where the car has no acceleration ?
a)
A car shortly after a stoplight turns green.
b)
A car approaching a red light
c)
A car with the cruise control set at 80 km/h
d)
A car turning a curve at a constant speed
98.
Which graph represents the greatest acceleration?
a)
A
b)
B
c)
C
d)
D
99.
Which graph represents zero acceleration (constant velocity)?
a)
A
b)
B
c)
C
d)
D
100.
A dog runs with an initial speed of 7.5 m/s on a waxed floor.  It slides to a stop in 15 seconds.  What is the acceleration?
a)
-7.5 m/s
b)
-7.5 m/s2
c)
-0.5 m/s2
d)
7.5 mi//hr
101.

Acceleration is just when an object speeds up?

a)

True, only objects speeding up is acceleration

b)

False, objects speeding up and slowing down is acceleration.

102.

Along with speeding up and slowing down, if you travel a constant speed you can be accelerating if you are __________ __________.

(a)  

103.

Choose all ways an object can accelerate.

a)

speed up

b)

slow down

c)

change direction

d)

stay at a constant speed and never change direction

104.

Acceleration and velocity are the same thing.

a)

True, they both measure speed

b)

False, acceleration is the rate at which velocity changes. Velocity is the speed AND direction of an object.

105.

Natalie drops her skateboard into a bowl speeding up from 0 m/s to 4 m/s in 2.5 s. What is her average acceleration?

a)

4 m/s

b)

1.6 m/s/s

c)

1.6 m

d)

2.5 m/s/s

106.

What kind of motion is taking place between points D and E?

a)

constant acceleration

b)

constant de

c)

changing acceleration

d)

constant speed

107.

What kind of motion is taking place between points A and B?

a)

constant acceleration

b)

constant de

c)

changing acceleration

d)

constant speed

108.

What kind of motion is taking place between points C and D?

a)

constant acceleration

b)

constant deceleration

c)

not moving

d)

constant speed

109.

Mark slams on the brakes after traveling 25 m/s. It takes him 3 seconds to come to a complete stop. What is his acceleration?

a)

8.33 m/s2

b)

-8.33 m/s2

c)

75 m/s2

d)

-75 m/s2

110.

How much time did it take Matthew to slow down to a complete stop, after traveling at 30 m/s. His acceleration is -12 m/s2

a)

2.5 s

b)

360 s

c)

.4 s

d)

-2.5 s

111.

If Anthony was running for 300 s after starting at rest, what was his final velocity if he had an acceleration of 0.05 m/s2

a)

.25 m/s

b)

.01 m/s

c)

100 m/s

d)

15 m/s

112.

Mars’ gravitational force is less than that of Earth’s . If an astronaut drops a hammer and its speed increases from 0 to 15 m/s in 4.04 s, what is the acceleration due to gravity on Mars?

a)

9.8 m/s2

b)

0.269 m/s2

c)

60.6 m/s2

d)

3.71 m/s2

113.
A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.
a)
2.2m/s2
b)
7.0m/s2
c)
5.7m/s2
d)
70m/s2
114.
A golf ball accelerates off a tee at 15m/s2, changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?
a)
750 seconds
b)
35 seconds
c)
0.3 seconds
d)
3.3 seconds
115.
A bicyclist begins moving with a velocity of 10 m/s and then decreases his velocity to 6 m/s in 2 seconds. What is the acceleration of the bicyclist?
a)
4 m/s2
b)
-4 m/s2
c)
2 m/s2
d)
-2 m/s2
116.
A dog runs with an initial speed of 7.5 m/s on a waxed floor.  It slides to a stop in 15 seconds.  What is the acceleration?
a)
-7.5 m/s
b)
-7.5 m/s2
c)
-0.5 m/s2
d)
7.5 mi//hr
117.

What is the motion shown in this velocity time graph?

a)

moving with a constant positive velocity

b)

Speeding up in the positive direction

c)

slowing down in the positive direction

d)

speeding up in the negative direction

118.

What is the motion shown in this velocity time graph?

a)

moving with a constant positive velocity

b)

Speeding up in the positive direction

c)

slowing down in the positive direction

d)

speeding up in the negative direction

119.

What is the motion shown in this velocity time graph?

a)

moving with a constant positive velocity

b)

Speeding up in the positive direction

c)

slowing down in the positive direction

d)

speeding up in the negative direction

120.

Describe the motion that this motion map shows

a)

speeding up in the negative direction

b)

slowing down in the negative direction

c)

speeding up in the positive direction

d)

slowing down in the positive direction

121.

Describe the motion that this motion map shows

a)

speeding up in the negative direction

b)

slowing down in the negative direction

c)

speeding up in the positive direction

d)

slowing down in the positive direction

122.

Describe the motion that this motion map shows

a)

speeding up in the negative direction

b)

slowing down in the negative direction

c)

speeding up in the positive direction

d)

slowing down in the positive direction

123.

Falling objects drop with an average acceleration of 9.8 m/s2 . If an object falls from a tall building, how long will it take before it reaches a speed of 49 m/s?

a)

5 s

b)

480.2 s

c)

0.2 s

d)

58.8 s

124.

How long would it take Jesse with an acceleration of -2.50 m/s2 to bring his bicycle with an initial velocity of 13.5 m/s to a complete stop?

a)

0.20 s

b)

32.5 5

c)

5.4 s

d)

16 s

125.

The elevators in the Landmark Tower, in Yokohama, Japan are among the fastest in the world. They accelerate upward at 3.125 m/s2 for 4.0 s to reach their final speed. If these elevators start from rest, what is their final speed?

a)

0.781 m/s

b)

7.125 m/s

c)

1.28 m/s

d)

12.5 m/s

126.

Justine is ice-skating at the Lloyd Center. What is her final velocity if she accelerates at a rate of 2.0 m/s for 3.5 seconds?

a)

1.5 m/s

b)

5.5 m/s

c)

7 m/s

d)

1.75 m/s

127.

Kaya is riding her dirt bike eastward on a dirt road. She spots a pothole ahead. Kaya slows her car from 14.0 m/s to 5.5 m/s in 6.0 s. What is her acceleration?

a)

-1.4 m/s2

b)

+ 1.4 m/s2

c)

0.7 m/s2

d)

14.5 m/s2

128.

Acceleration is

a)

the rate at which velocity changes.

b)

the change in velocity

c)

the rate of change

d)

when you speed up only

129.

Velocity has two components

(pick 2 below)

a)

direction

b)

change in speed

c)

speed up

d)

slow down

130.

In science, acceleration refers to

a)

increasing speed

b)

decreasing speed

c)

changing direction

d)

increasing speed only

131.

What does it mean when a change in velocity is negative?

a)

The object is speeding up.

b)

The object is slowing down.

c)

The object is changing direction.

d)

The object is falling down.

132.
In each of the following cases, determine where the car has no acceleration ?
a)
A car shortly after a stoplight turns green.
b)
A car approaching a red light
c)
A car with the cruise control set at 80 km/h
d)
A car turning a curve at a constant speed
133.
Which of the following is a unit for acceleration?
a)
km/s
b)
m/s2
c)
mi/hr
d)
ft
134.

If velocity is measured in meters/second and time is measured in seconds, the unit of acceleration is

a)

m/s/s

b)

m/s2

c)

m/s

d)

m

135.

If velocity is measured in kilometers/hour and time is measured in seconds, the unit of acceleration is

a)

km/s/s

b)

km/s2

c)

km/h/s

d)

km

136.

If velocity is measured in miles/hour and time is measured in seconds, the unit of acceleration is

a)

mi/h/s

b)

mi/s2

c)

mi/h2

d)

mi

137.

While driving at an average velocity of 15.6 m/s down the road, a driver slams on the brakes to avoid hitting a squirrel. The car stops completely in 4.2 seconds. What is the average acceleration of the car?

What should your answer's final unit(s) for this problem be?

a)

m/s/s

b)

m/s2

c)

m/s

d)

m

138.

A sports car is advertised as being able to go from 0 to 60 mi/h in 6.00 seconds. What is the sports car’s average acceleration?

What should be your answer's final unit(s) be for this problem?

a)

mi/h/s

b)

m/s/s

c)

m/s

d)

mi/h

139.

In the video #What is Acceleration?", what was the symbol/abbreviation they used for initial velocity?

a)

u

b)

vi

c)

v1

d)

v

140.

In the video #What is Acceleration?", what was the for the acceleration problem she worked?

a)

2 m/s

b)

2 m/s2

c)

5 m/s2

d)

5 m/s

141.
If you are test-driving a Bugatti Veyron and you go from 0 km/s to 124 km/s in 3.7 seconds, what was your acceleration?
a)
33.5 m/s2
b)
0.03 m/s2
c)
-33.5 m/s2
d)
-0.03 m/s2
142.

A plane lands on the runway and slows from 758 km/hr to 30 km/hr in 0.013 hours. What is the plane's acceleration in m/s2?

a)

56,000 m/s2

b)

17857 m/s2

c)

-17857 m/s2

d)

-56,000 m/s2

143.

What is the final velocity of a rocket that travels for 4 seconds, has an initial velocity of 12 km/s and an acceleration of 2 km/s2?

a)

-4 km/s

b)

10 km/s

c)

20 km/s

d)

-10 km/s

144.
A golf ball accelerates off a tee at 15m/s2, changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?
a)
750 seconds
b)
35 seconds
c)
0.3 seconds
d)
3.3 seconds
145.

The building with the highest occupiable floor is currently the Sears Tower in Chicago. The top floor of the Sears Tower is 110 stories (436 m) above street level, and the roof of the tower is 442 m above the street. Assume a golf ball is thrown downward from the roof of the Sears Tower. Neglecting air resistance, the golf ball accelerates at 9.8 m/s2 and lands on the pavement after 9.2 s. If the ball’s final speed is 93.0 m/s, what was the speed with which the ball was initially thrown?

a)

3 m/s

b)

12 m/s

c)

19.9 m/s

d)

34.2 m/s

146.

Which of the following is not accelerating?

a)

a ball being juggled

b)

a woman walking at 2.5 m/s along a

straight road

c)

a satellite circling Earth

d)

a braking cyclist

147.

The light turns red, and you ease to a halt. Checking your stopwatch, you see that you stopped in 4.5 seconds. Your acceleration was 1.23 x 10–3 miles per second2 in a direction opposite to your original velocity.

What was your original speed in miles per hour?

a)

19.9 mi/h

b)

34 mi/h

c)

29 mi/h

d)

39.0 mi/h