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Physics Midterm Exam Review

Total questions: 80

Worksheet time: 3hrs 45mins

Name
Class
Date
1.

Which TWO of the following are vectors?

a)

Distance

b)

Displacement

c)

Speed

d)

Velocity

2.

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

3.

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

4.

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

5.

Speed and Velocity are the same because both describe how fast an object is moving. They are different because Velocity also includes, ___.

a)

time

b)

distance

c)

direction

d)

rotation

6.

Match the following

a)

Scalar is a

1.

Variable with magnitude only

b)

Vector is a

2.

Variable with magnitude and direction

c)

Magnitude is

3.

How much; the intensity

d)

Direction

4.

Which way; N, S, E, W

e)

Velocity is

5.

Speed and direction of motion

7.

Mary was interested in finding the _______. She took the initial velocity plus the final velocity and divided by two.

a)

Average speed

b)

Instantaneous speed

c)

Relative speed

d)

Average velocity

8.
Which of the following is a unit for acceleration?
a)
km/s
b)
m/s2
c)
mi/hr
d)
ft
9.
When a car goes around a corner at 20 mph, why do we say it  accelerates?
a)
The car is accelerating because of the velocity is constant
b)
The car accelerates because it's going 20 mph
c)
Cars always accelerate when they are in motion
d)
The car is accelerating because it's changing direction
10.
Acceleration only takes place when things speed up. 
a)
True
b)
False
11.
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
12.

A girl drops a 7 gram bowling ball and a 1gram rock from a cliff. Which will hit the ground first?

a)

Bowling Ball

b)

Rock

c)

Ignoring air resistance, both will hit at the same time.

d)

The cliff

13.

What assumption can you make for the acceleration, in the x-component of projectile motion?

a)

-9.8 m/s^2

b)

0 m/s^2

14.

What assumption can you make for the acceleration, in the y-component of projectile motion?

a)

-9.8 m/s^2

b)

0 m/s^2

15.

If you decrease the height you launch an object, the time the object will be in the air will ​ (a)  

Choose from the below words

decrease

increase

remain constant

16.

Acceleration is defined as

a)

the change in velocity over time

b)

the change in position over time

c)

the change in time over velocity

d)

the change in time over distance

17.

Weight

a)

Current in a circuit

b)

Force exerts on a body due to gravity

c)

the amount of matter in a body

d)

energy of a mass due to its motion

18.

SELECT ALL THAT APPLY

How are mass and weight different?

a)

mass never changes

b)

weight depends on gravity

c)

mass depends on gravity

d)

weight never changes

19.
A car speeding up, a dog slowing down and person turning around the block are examples of..
a)
Balanced Forces
b)
Unbalanced Forces
20.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)

An object at rest stays at rest, an object in motion stays in motion until acted upon by an outside force

d)
Friction 
21.
Newton's third law states that any action will have a(n) _______ and ______ reaction
a)
Equal and similar
b)
Equal and opposite
c)
Equal and different
d)
Greater and opposite
22.

This equation goes with which law?

a)

Newton's first law of motion

b)

Newton's second law of motion

c)

Newton's third law of motion

23.

A person is pushed forward into their seat belt when a car stops. Which law is this?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

24.

A skater pushes another skater forward, but the one pushing moves backwards.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

25.

An object travelling at terminal velocity moves at a steady speed.

a)

True

b)

False

26.

When perpendicular vectors are added, what is true about the magnitude of the resultant vector?

a)
The resultant vector is zero
b)
The resultant vector is equal to the sum of the magnitudes of the two vectors
c)
The resultant vector is equal to the difference of the magnitudes of the two vectors
d)

The resultant vector is equal to the square root of the sum of the two vectors squared

27.

What happens to the Horizontal and Vertical Velocity of a projectile as the object moves it's path?

a)

Horizontal Velocity: Constant

Vertical Velocity: Zero

b)

Horizontal Velocity: Decrease then Increase

Vertical Velocity: Increase then Decrease

c)

Horizontal Velocity: Constant

Vertical Velocity: Decrease then Increase

d)

Horizontal Velocity: Increase then Decrease

Vertical Velocity: Constant

28.

A vector is a ray with both ____________ and _____________.

a)

Wings and halos

b)

Space and time

c)

Direction and magnitude

d)

Radicals and exponents

29.
The _______ of two or more vectors is the sum of the vectors.
a)
components
b)
scalar
c)
resultant
d)
magnitude
30.

Which of the following statements is correct about static friction?

a)

Static friction does not depend on the surface roughness.

b)

Static friction always has the same magnitude for a given object on a given surface no matter what external forces are applied.

c)

Static friction is always parallel to the object-surface interface.

d)

The magnitude of the static friction force depends solely on which horizontal external forces are acting on the object.

31.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
32.

A 10-N book is being pushed right on a table with a force of 2 N at a constant speed. Label all 4 forces.

a)

0 N

b)

-4 N

c)

10 N

d)

-10 N

e)

2 N

f)

-2 N

1
2
3
4
1)
2)
3)
4)
33.

The the force applied is 60 N, what is the horizontal component of that force?

a)

52 N

b)

60 N

c)

90 N

d)

30 N

e)

49 N

34.

If the force applied is 60 N, what is the vertical component of that force?

a)

52 N

b)

60 N

c)

90 N

d)

30 N

e)

49 N

35.

The mass of your bookbag is 12.0 kg, what is the weight?

a)

1.2 .0 N

b)

12.0 kg

c)

118 N

d)

124 N

e)

112 N

36.

The sum of all forces acting on an object and direction is called the:

a)

Contact Force

b)

Balanced Force

c)

Unbalanced Force

d)

Net Force

37.

A push or pull exerted on an object is called a(n):

a)

Force

b)

Net force

c)

Momentum

d)

Speed

38.

Forces are a vector so they have both a direction and a:

a)

Magnitude

b)

Motion

c)

Speed

d)

Height

39.

What is the name of the missing force?

a)

gravity

b)

normal force

c)

applied force

d)

frictional force

40.

What is the name of the missing force?

a)

frictional force

b)

normal force

c)

gravity

d)

applied force

41.

What is the name of the missing force?

a)

applied force

b)

gravity

c)

friction

d)

normal force

42.

The path followed by a projectile is also known as its

a)

trajectory

b)

range

c)

height

d)

vertical displacement

43.

Once a projectile is launched, what is the only force that affects its motion?

a)

mass

b)

friction

c)

inertia

d)

gravity

44.
What is the horizontal acceleration of a projectile?
a)
0 m/s2
b)
9.8 m/s2
45.

As a pendulum gets longer, what happens to the period?

a)

doesn't change

b)

decreases

c)

increases

46.

Which of these does not affect the period of a pendulum?

a)

length

b)

gravity

c)

mass

47.

Centripetal force is...

a)

the inward force acting on a body moving at constant speed in a circle

b)

the outwards force acting on a body moving at constant speed in a circle

48.
Centripetal acceleration acts towards the ___________ of the circular motion
a)

center

b)
circumference
49.
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
50.

A ball is moving at constant speed around the circle. Which letter represents the acceleration of the ball?

a)

A

b)

B

c)

C

d)

D

e)

Nonsense. The ball can't be accelerating while moving at a constant speed.

51.

Why do objects experience centripetal acceleration even though they can have a constant speed?

a)

Because they are speeding up as they move in a circle

b)

Because they are constantly changing direction and hence, velocity changes, and that net change is directed inward.

c)

Because they are constantly changing both speed and direction

d)

Because when you have 100 people pedaling, you can speed up more easily.

52.

Like velocity, acceleration, and force, momentum is described by its direction as well as its quantity. This means it is a _______

a)

scalar quantity

b)

vector quantity

53.

What is true about the relationship between mass and momentum.

a)

The less mass an object has, the more momentum it will have.

b)

The more mass an object has, the less momentum it will have.

c)

The more mass an object has, the more momentum it will have.

d)

Mass has nothing to do with momentum.

54.

Even if an object has a smaller mass, it can have a larger momentum if it has a high _______.

a)

velocity

b)

displacement

c)

weight

55.
The impulse is ______ the change in momentum
a)
Greater than
b)
Equal to
c)
less than
d)
always double
56.

In a collision in a closed, isolated system, the ______ is ALWAYS constant.

a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
57.
When two objects collide, the Pbefore is ____________ the Pafter.
a)
more than 
b)
less than 
c)
equal to
d)
unrelated to
58.
A system can be defined as
a)
A collection of parts that work together to complete a purpose
b)
A system
c)
A piece of a whole
d)
A group that individually does work
59.

In a closed system...

a)

Energy can enter and leave but matter cannot.

b)

Both Matter and Energy can leave or enter.

c)

Neither matter or Energy can leave or enter.

d)

Matter can enter and leave but energy cannot.

60.

A large moving ball collides with a small stationary ball. The momentum

a)

of the large ball decreases, and the momentum of the small ball increases.

b)

of the small ball decreases, and the momentum of the large ball increases.

c)

of the large ball decreases, and the momentum of the small ball decreases.

d)

does not change for either ball.

61.

Which is true of the law of conservation of momentum?

a)

Momentum is always conserved, no matter what.

b)

Momentum is always conserved in closed , isolated systems.

62.

The person in the picture wants the crate to move to the right at 4.0 m/s. A friction force of 9.0 N to the left is acting on the crate as it slides. The person needs to pull to the right with a force of ---.

a)

4.0 N

b)

9.0 N

c)

13.0 N

d)

anything more than 9.0 N

63.

According to the free-body diagram of the engine block being dragged across the floor, this engine block is ---.

a)

moving to the right

b)

not moving

c)

accelerating to the right

d)

cannot say without more information

64.

A dolphin swims in a circle with a radius of 30 m and moves with a speed of 3.2 m/s. What is the dolphin’s centripetal acceleration?

a)

0.341 m/s²

b)

0.106 m/s²

c)

96 m/s²

d)

307.2 m/s²

65.

In which direction is the net force when the rollercoaster is at the top of the loop?

a)

Towards the sky

b)

Towards the right

c)

Towards the left

d)

Towards the ground

66.
Which of the following is the unit for centripetal force?
a)
J
b)
m/s2
c)
kg⋅m/s
d)
N
67.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
68.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Not moving
69.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
70.

Which graph BEST represents the motion of an object that was initially at rest and is accelerating uniformly?

a)
b)
c)
d)
71.
What is the net force?
a)
30 N 
b)
25 N 
c)
5 N 
d)
55 N 
72.

The girls in this picture represent ________ forces (or 2 objects in equilibrium). 

a)
kinetic
b)
balanced
c)
unbalanced
d)
chemical
73.

Which boy will have an easier time getting down the hill?

a)

Boy A , because he is experiencing less friction than boy B.

b)

Boy B, because he is experiencing more friction than boy A.

74.
Which object listed below has the greatest momentum?
a)
A 0.05 kg object rolling at 0.2 m/s.
b)
A 0.15 kg object rolling at 2 m/s.
c)
A 0.15 kg object rolling at 1 m/s
d)
A 0.4 kg object rolling at 2 m/s.
75.
What is the unit for momentum?
a)
m/s
b)
kg/s
c)
kg/m
d)

kg*m/s

e)

p

76.

The mass of a brick is 5kg, and it is stationary. What is the maximum static friction if the coefficient is 0.66?

a)

3.3

b)

33

c)

3.3N

d)

33N

77.

There are 25N of friction that keep a 10kg brick moving at a constant rate. What is the coefficient of friction?

a)

0.25

b)

0.25N

c)

4

d)

4N

78.

Frequency is defined as __________.

a)

The number of occurrences of a repeating event per unit of time

b)

The speed of an object in motion

c)

The distance between two points

d)

The amount of space an object occupies

79.

If you increased the length of a pendulum by a factor of 4, how much would the period change?

a)

The period would double

b)

The period would quadruple

c)

The period would remain the same

d)

The period would decrease by a factor of 2

80.

The period of a pendulum that is 1.0 m long on earth is:

a)

1.0 s

b)

2.0 s

c)

3.0 s

d)

0.050 s

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