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Semester 1 Review

Total questions: 100

Worksheet time: 3hrs 58mins

Name
Class
Date
1.
Which statement describes a vector?
a)
It has magnitude but no direction
b)
It has direction but no magnitude
c)
It has both direction and magnitude
d)
It has constant magnitude but no
 direction
2.
Is this a scalar quantity or a vector quantity?
A deer running 15 meters per second due west
a)
Scalar
b)
Vector
3.
Which of these is not a vector quantity? 
a)
displacement 
b)
time
c)
velocity 
d)
acceleration
4.

A quantity described by magnitude and does not need direction

a)

Vector

b)

Scalar

5.

Speed is

a)

Vector

b)

Scalar

6.
Velocity is 
a)
speed
b)
direction
c)
speed with a direction
7.
LT4: The graph shows Ashley riding her bike to Maria's house. 
What was occurring from point B to point C?
a)
She was increasing her speed.
b)
She stopped for 4 minutes
c)
She was decreasing in speed
8.
LT4: The graph shows Ashley riding her bike to Maria's house. 
What is occurring from point A to point B?
a)
they are traveling at a constant speed
b)
they are decreasing in speed
c)
they stopped to take a break
9.
At what point is the object resting/not moving?
a)
A-B
b)
 B-C , D-E
c)
E-F
d)
E-G
10.

What is the speed of an object that travels 40 meters in 5 seconds?

a)

8 m/s

b)

0.2 m/s

c)

16 m/s

d)

24 m/s

11.

What is the speed of an object that travels 45 meters in 5 seconds?

a)

240 m/s

b)

9 m/s

c)

0.067 m/s

d)

15 mph

12.
An object travels a distance of 12.8 m in 15 seconds. What is its average velocity?
a)
15 m/s
b)
12.8 m/s
c)
0.85 m/s
d)
1.17 m/s
13.

What is acceleration?

a)

the rate velocity changes

b)

a measure of speed

c)

the distance traveled by an object

d)

speed in a certain direction

14.

Which of the following is a unit for acceleration?

a)

km/s

b)

m/s2

c)

mi/hr

15.

What is happening to the velocity?

a)

Constant

b)

Decreasing

c)

Increasing

16.

The speed boats speed increased from 0m/s to 24m/s in a time span of 12 seconds.

a)

4 m/s²

b)

2 m/s²

c)

8 m/s²

17.
A roller coasters accelerates from an initial velocity of 6.0 m/s to a final velocity 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
18.
How can acceleration be zero?
a)
a car runs out of gas and slowly rolls to a stop
b)
a car decreases speed at a constant rate until it comes to rest
c)
car has constant speed and is traveling on a straight path
d)
the car travels round trip and is back at the starting point
19.
A ball takes 5 seconds to roll up a slanted hill. It starts with a velocity of 2.5 m/s up the hill and is moving at 0.5 m/s when it reaches the top of the hill. What is the average acceleration?
a)
5 m/s2
b)
0.4 m/s2
c)
-0.4 m/s2
d)
-1 m/s2
20.
A ball starts rolling up a slanted hill. It starts with a velocity of 2.5 m/s up the hill, slows down for 5 s, stops for an instant, and then rolls back down the hill. Assuming that the positive direction is up the hill, what is the magnitude of the ball's average acceleration as it rolls up the hill?
a)
0.125 m/s2
b)
0.25 m/s2
c)
0.5 m/s2
d)
0.75 m/s2
21.

How fast will a brick be going after it falls for 2.5 seconds?

a)

25 m/s

b)

30 m/s

c)

20 m/s

d)

10 m/s

22.

An object in free fall has a ____ acceleration.

a)

constant

b)

increasing

c)

decreasing

d)

zero

23.

Approximately how fast will an object fall in 5 seconds?

a)

5 m

b)

25 m

c)

50 m/s

d)

125 m

24.
More massive objects will only fall faster if there is not air resistance.
a)
True
b)
False
25.
For every action, there is an equal and opposite reaction.
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
26.
An automobile you are riding in suddenly stops, but you continue to go forward.
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
27.
When the force on a car is doubled, the acceleration is doubled.
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
28.
A skater pushes another skater forward, but the one pushing moves backwards.
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
29.
What is the definition of "weight"?
a)
measure of the force of gravity on your body
b)
the time it takes to get on a ride 
c)
the amount of matter in an object
d)
the size of an object
30.
A measure of how much matter an object has is--
a)
weight
b)
gravity
c)
mass
d)
volume
31.
The mass of an object ___________ as it moves away from the center of Earth
a)
stays the same
b)
decreases
c)
increases
d)
doubles
32.
Why would you weigh less on the moon compared to Earth?
a)
less air
b)
less sunlight
c)
more gravitational pull
d)
less gravitational pull
33.
Accelerations are produced by
a)
forces.
b)
 velocities.
c)
 accelerations.
d)
 masses.
34.
A 20 kg bike accelerates at 10 m/s2.  what was the force
a)
25 Newtons
b)
20 Newtons
c)
200 Newtons
d)
10 Newtons
35.
If you increase the mass on an object, its acceleration
a)
decreases
b)
stays the same
c)
also increases
d)
stops
36.
If a 2kg bird is pushed by the wind with a force of 2N, how fast does the bird accelerate?
a)
1 m
b)
2 m/s2
c)
4m/s2
d)
1 m/s2
37.

The momentum of an object depends upon the object's ___________&_____________.

a)

size and shape

b)

mass and inertia

c)

mass and veloctiy

d)

mass and energy

38.

How can a tennis ball and a bowling ball have the same momentum?

a)

have the same speed

b)

have different speeds

c)

one is moving backwards

d)

they can't

39.

T/F: A big truck will always have more momentum than a small car.

a)

True

b)

False

40.
A 2 kg cart has a momentum of 10 kg m/s. What is its velocity?
a)
22 m/s
b)
.2 m/s
c)
5.0 m/s
d)
20 m/s
41.

A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s. Calculate the impulse on the ball.

a)

1 N⋅s

b)

6 N⋅s

c)

33.3 N⋅s

42.

The purpose of air bags in a car is to

a)

decrease time of impact.

b)

increase force of impact.

c)

increase the time of impact.

d)

decrease the impulse during impact.

43.

If an object experiences an impulse of 24-Kg⋅m/s, what is the object's change in momentum?

a)

24-Kg⋅m/s

b)

−24-Kg⋅m/s

c)

0-Kg⋅m/s

d)

Not enough information

44.

A car crashes into a barrier with an impulse of 40,000 kg x m/s. The collision took 2 seconds. How much force did the barrier exert?

a)

80,000 N

b)

60,000 N

c)

40,000 N

d)

20,000 N

45.

Most modern vehicles have padded dashboards. This reduces collision injuries by...

a)

reducing the driver's change in momentum

b)

increasing the driver's change in momentum

c)

increasing the force of impact

d)

increasing the time of impact

46.

Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?

a)

car

b)

bike

c)

they are equal

d)

cannot determine using the info provided

47.
A biker with a mass of 75 kg moves along the path with a constant velocity of 5 m/s. What is the biker's momentum?
a)
25 m/s
b)
375 m/s
c)
25 kg m/s
d)
375 kg m/s
48.
Which takes more force  to catch, a bowling ball or a ping pong ball?
a)
bowling ball because it has more momentum
b)
ping pong ball because it has more momentum
c)
both require the same amount of force when catching
d)
bowling ball because it has less momentum
49.
This picture is an example of ____________
a)
Elastic Collision
b)
Inelastic collision
50.
This picture is an example of ____________
a)
Elastic Collision
b)
Inelastic collision
51.
This is an example of what kind of collision?
a)
Elastic
b)
Inelastic
52.

Collision in which objects stick together or change shape

a)

inelastic collision

b)

elastic collision

c)

both types

d)

neither types

53.
The total momentum before a collision is _________ the total momentum after a collision.
a)
equal to 
b)
less than 
c)
more than
d)
It depends on the type of collision
54.

An 1 kg object moving at 2 m/s collides inelastically with a 1 kg at rest. The final velocity of both objects will be

a)

0 m/s

b)

1 m/s

c)

2 m/s

d)

4 m/s

55.
The law of conservation of momentum states that, 
a)
p before is less than p after
b)
p before is the same as p after
c)
p before is more than p after
56.
A 2.5 kg ball moving at 4.2 m/s collides with a 2.5 kg stationary ball. If the first ball is at rest after the collision, what is the velocity of the second ball? 
a)
2.1 m/s
b)
2.5 m/s
c)
4.2 m/s
d)
8.4 m/s
57.
What kind of energy is in a rock at the edge of a cliff?
a)
Potential
b)
Kinetic
58.
What kind of energy is in a waving hand?
a)
Potential
b)
Kinetic
59.

A roller coaster has a mass of 250 kg, and is 50 meters above the ground, what is the potential energy?

a)

125,000 Joules

b)

12,500 Joules

c)

5 Joules

60.
What is the KE of a 1.00 kg hammer swinging at 20.0 m/s?
a)
200 Joules
b)
1500 Joules
c)
950 Joules
61.
What is the KE of a football which has a mass of 0.8 kg and is kicked at a velocity of 10m/s.
a)
80 J
b)
3.2 J
c)
160 J
d)
40 J
62.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
63.

What is the stored energy of a 3 kilogram object sitting on a shelf 2 meters high?

a)

6 J

b)

60 J

c)

5 J

d)

2/3 J

64.
The Law of Conservation of Energy states:
a)
Energy can created or destroyed but not transformed 
b)
Energy cannot be created or destroyed, it can only transformed
c)
Energy can't be created, destroyed or transformed
65.
An object has 64 J of kinetic,134 J of potential, then it will have _____ of mechanical energy.
a)
8,576 J
b)
189 J 
c)
70J
d)
198 J 
66.
At which point(s) on the roller coaster is the kinetic energy at its maximum?
a)
A
b)
B
c)
C
d)
D
67.
Energy of motion is which type of energy?
a)
Potential
b)
Kinetic
c)
Sound
d)
Gravitational
68.
Gravitational potential energy depends on the ________ and ________ of the object. 
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction 
69.
A construction worker pushes a wheelbarrow 5 m with a horizontal force of 50 N.  How much work is done?
a)
10J
b)
55J
c)
250J
d)
1250J
70.
Unit of Energy and Unit of Work
a)
joule
b)
watt
c)
volt
d)
newton
71.
Which of the following is an example of work being done?
a)
Teacher sitting in a chair
b)
Book resting on desk
c)
Keys hanging from a key chain
d)
A ball being rolled on the floor
72.
If a student uses 10 Newtons of Force to push a chair 5 meters, how much is work is being done?
a)
2 Joules
b)
.5 Joules
c)
50 Joules
d)
20 Newtons
73.
If a lion drags his prey 10 meters to his den doing 500 joules of work, how much force did he use?
a)
50 Newtons
b)
500 Joules
c)
50,000 Newtons
d)
10 Newtons
74.

How far does a car that weighs 5,000 N go if 18,000 J of work is done on it?

a)

3.8 m

b)

3.7 m

c)

3.2 m

d)

3.6 m

75.

What is the unit of Power?

a)

Watts

b)

Kilograms

c)

Joules

d)

Newtons

76.

When doing a chin-up, a student lifts her 420N body a Distance of 0.25 meters in 2 seconds. What is the Power delivered by the students biceps?

a)

6.25 W

b)

62.5 W

c)

52.5 W

d)

5.25 W

77.

Using 1000 J of work, a small object is lifted from the ground floor to the third floor of a tall building in 20.0 seconds. What power was required in this task?

a)

20000 W

b)

1/50 W

c)

50 W

d)

2000 W

78.
A spinning motion on an axis
a)
rotation
b)
revolution
79.

The Earth completes one of these every 365.25 days

a)

rotation

b)

revolution

80.
This is the reason we experience day and night
a)
rotation
b)
revolution
81.
The gravitational pull of the Sun on the Earth causes this
a)
rotation
b)
revolution
82.
A horse gallops around a circular arena.  The centripetal force on the horse is ___.
a)
directed outward
b)
tension
c)
directed toward the center of the arena
d)
9.8 N
83.
The centripetal force of satellites is similar to gravitational force because they are both a net force towards the center of earth.
a)
True
b)
False
84.

A yo-yo is whirled on a string, then the string breaks. What causes the yo-yo to move off in a straight line?

a)

centrifugal force

b)

centripetal force

c)

inertia

d)

centripetal acceleration

85.

You swing a bucket of water attached to a string in a circle above your head. What keeps is the source of the centripetal force?

a)

Friction

b)

Tension in the string

c)

Gravity

d)

Inertia

86.

What is the centripetal force when the roller coaster is at the top of the loop?

a)

Gravity

b)

The tracks

c)

Friction

87.

How much work does gravity do on your 63 kg teacher when she trips and falls from a height of 1.5 m?

a)

42 J

b)

94.5 J

c)

945 J

d)

420 J

88.

Find the distance an object traveled if a force of 350 N acted on it to produce 0 work?

a)

3 m

b)

2 m

c)

1 m

d)

0 m

89.

If you push a coffee mug 1.4 m using a force of 5 N, the work done on the mug is?

a)

7 J

b)

6 J

c)

8 J

d)

9 J

90.
If Keegan does 508 J of work pushing a cart 29 m, how much force did he apply?
a)
16.48 N
b)
18.31 N
c)
15.89 N
d)
17.52 N
91.
What is the equation for power?
a)
P = Work/time
b)
P = Force/time
c)
P = time/distance
d)
P = Work * time
92.
Person A is twice the weight of Person B and climb the same hill. If person A gets the top in half the time then...
a)
Person A is twice as powerful
b)
Person B is twice as powerful
c)
Person A is four times as powerful
d)
Person B is four times as powerful 
93.
Two factors effecting the magnitude of the force of gravity between 2 objects are...
a)
mass and distance 
b)
mass and matter
c)
distance and weight 
d)
weight and mass
94.
Every object in the universe attracts every other object.
a)
True
b)
False
95.
If Earth's mass was cut in half, what would happen to your weight?
a)
Increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, weight is not affected by gravitational force
96.
As distance between two objects increase the pull of gravity 
a)
Increases
b)
Decreases
c)
Stays the same
97.
Two asteroids exert a gravitational force, F, on each other. Some time later, the asteroids are now three times as far from each other as before. Which of the following represents the gravitational force at this distance? 
a)
F/3
b)
F/2
c)
F/6
d)
F/9
98.
What states that "every object in the universe attracts every other object"?
a)
Law of Universal Gravitation
b)
Newton's First Law of Motion
c)
My mother
d)
Inertia & gravity
99.
Force of gravity is inversely proportional to
a)
Mass
b)
Weight
c)
Distance
d)
Time
100.
Force of gravity is directly proportional to
a)
Mass
b)
Weight
c)
Distance
d)
Time

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