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1 of 2 *Physics - Semester 2 Review - Spring 2022

Total questions: 70

Worksheet time: 1hrs 10mins

Name
Class
Date
1.

True or False. Acceleration of an object is directly proportional to the net force acting on it

a)

True

b)

False

2.
If a baseball and a cannonball are dropped from the same height at the same time, which ball will hit the ground first?
a)
the cannonball
b)
the baseball
c)
The balls land at the same time.
d)
the ball with the larger volume
3.

What is Newton's 2nd Law?

a)

Every action has an equal and opposite reaction

b)

An object at rest stays at rest, an object in motion stays in motion.

c)

F = ma

d)

p = mv

4.

What is force?

a)

A push on an object

b)

A pull on an object

c)

A push or pull on an object

5.

True or False. 800 N = 800 kg ⋅ m/s2

a)

True

b)

False

6.
What is Newtons 1st law of motion?
a)
Force= Mass multiplied by acceleration 
b)
An object at rest stays at rest unless acted on an unbalanced force. (inertia)
c)
For every action there is a equal and opposite  re-action.
d)
law of gravity 
7.

Objects with greater mass have a greater inertia; objects with less mass have less inertia.

a)

true

b)

false

8.

Net force is a combination of all ________ acting on an object.

a)

forces

b)

speeds

c)

accelerations

d)

velocities

9.

If an object is accelerating, then the forces acting on it must be:

a)

Balanced

b)

Unbalanced

10.
Evidence is ___________________
a)

A conclusion

b)

Scientific data

c)

A justification

d)

a statement

11.

The SI unit for acceleration is

a)

mph

b)

ft/sec

c)

m/s2

d)

m/s

12.
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  
13.

A cat has a mass of 200 kg and accelerates at 3 m/s2 to catch a mouse. How much force would be needed to stop the cat?

a)

200 N

b)

300 N

c)

500 N

d)

600 N

14.

What is the unit for force?

a)

kg

b)

newton

c)

m/s

d)

m/s2

15.

Mass and acceleration are _____________ related

a)

inversely

b)

directly

c)

m/s

d)

m/s2

16.

Newton’s law states that for every action, there is an ________ reaction.

a)

unequal and opposite

b)

equal and similar

c)

stronger and opposite

d)

equal and opposite

17.

When a person pushes against the ground with their foot, the equal and opposite reaction force is

a)

when they start to move forward

b)

the ground pushing back on their foot

18.

What is the reaction force to a foot pushing down on the floor?

a)

The foot going through the floor

b)

The floor pushing back against the foot

c)

The floor breaking to the foot

19.

A runner has a momentum of 670 kg m/s and is travelling at a velocity of 11 m/s. What is his mass?

a)

7030 kg

b)

0.0164 kg

c)

61 kg

d)

68 kg

20.

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

a)

size and shape

b)

mass and speed

c)

mass and veloctiy

d)

mass and energy

21.
A 40-kilogram mass is moving across a horizontal surface at 5.0 m/s.  What is the magnitude of the net force required to bring the mass to a stop in 8.0 seconds?
a)
1 N
b)
40 N
c)
25 N
d)
5 N
22.

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)

66 N·s

d)

None of these

23.

When the speed of an object is doubled, its momentum...

a)

remains unchanged in accord with the conservation of momentum.

b)

doubles.

c)

quadruples.

d)

decreases.

24.
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
25.

A 2 kg cart has a momentum of 16 kg m/s. What is its velocity?

a)

8 m/s

b)

32 m/s

c)

0.125 m/s

d)

18 m/s

26.
In any collision (crash) the ______ is ALWAYS constant
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
27.
When two objects collide, the Pbefore is ____________ the Pafter.
a)
more than 
b)
less than 
c)
equal to
d)
unrelated to
28.

The Law of Conservation of Momentum states:

a)

The total momentum before a collision is equal to the total momentum after a collision.

b)

The total momentum before a collision is greater than the total momentum after a collision.

c)

The total momentum before a collision is less than the total momentum after a collision.

d)

The total momentum before a collision is not related to the total momentum after a collision.

29.
The definition of momentum is
a)
Mass in Motion
b)
The size of an object
c)
The velocity of an object
d)
A comparison between two objects
30.

Collisions where objects BOUNCE apart.

a)

inelastic collisions

b)

elastic collisions

c)

explosions

d)

none of these

31.

A trampoline increases __________________, which in turn decreases _____________________.

a)

force / time

b)

mass / weight

c)

time / force

d)

acceleration / velocity

32.
Potential or kinetic?
Stretched bow and arrow?
a)
kinetic
b)
potential
33.
If an object moves from a high place to a lower place, will it gain or lose potential energy?
a)
lose
b)
gain
c)
neither
d)
both
34.
Groot rescues Rocket from the bottom of a deep pit. Groot expends 1000 J of energy lifting Rocket who has a mass of 50 kg out of the pit. How deep is the pit?
a)
0.5 m
b)
2 m
c)
4 m
d)
10 m
35.

When you rub your hands together on a cold day, you use friction to convert

a)

Mechanical energy into thermal energy

b)

Thermal energy into nuclear energy

c)

Chemical energy into mechanical energy.

d)

Electrical energy into thermal energy

36.

A student with a mass of 62 kg walks up a flight of stairs with a height of 3.4 meters. How can he decrease his power?

a)

walk slower

b)

walk faster

c)

carry his friends books

37.

A 5 kg cat falls off a 3 m tall fridge. What is the cat's PE as it starts to fall?

a)

15 J

b)

30 J

c)

150 J

d)

1470 J

38.
What is the equation for power?
a)
P = Work/time
b)
P = Force/time
c)
P = time/distance
d)
P = Work * time
39.
 Work done = Force x _________
a)
a. distance
b)
b. acceleration
c)
c. velocity
d)
d. speed
40.
The unit used to measure work is the 
a)
Watt
b)
Newton
c)
Joule
d)
meter
41.
What is the formula for calculating the total amount of mechanical energy?
a)
ME = KE + PE
b)
KE = ME + PE
c)
PE = KE + ME
d)
ME = 1/2 mv2
42.

How high up is a 3200-kg plane if it has 960000 J of potential energy?

a)

10 m

b)

30 m

c)

307200000 m

d)

300 m

43.
Spinning of the Earth on its axis is called...
a)
rotation
b)
revolution
c)
orbit
d)
double axis
44.
What motion of the Earth takes 365 days?
a)
Rotation
b)
Tilting 
c)
Revolution
d)
Spinning
45.

What does the term "centripetal" mean?

a)

Center fleeing

b)

Center seeking

c)

Rotation

d)

Circular

46.

Why does mud fling off the tires if the tires are rotating fast?

a)

The mud is to heavy on the tires and flings off

b)

The centripetal force isn't enough to hold the mud and it flings off

c)

Gravity pulls the mud off when the tires rotate to fast

47.
The velocity is always _____ to the line of a circle. 
a)
outwards
b)
towards the center
c)
tangent
d)
faster
48.

800 N = 800 ____

a)

kg ⋅ m/s2

b)

m/s

c)

kg/s

d)

J/s

49.

Which of the following terms means "center fleeing"?

a)

centrifugal

b)

centripetal

50.

This is the result (feeling) of inertia but is mistaken for an outward, real force.

a)

centripetal force

b)

centripetal acceleration

c)

centrifugal force

d)

gravity

51.
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
52.
Which of the following is the unit for centripetal force?
a)
J
b)
m/s2
c)
kg⋅m/s
d)
N
53.

Momentum is a ____________________ quantity

a)

science

b)

scalar

c)

vector

d)

energy

54.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
55.
When two objects collide, the Pbefore is ____________ the Pafter.
a)
more than 
b)
less than 
c)
equal to
d)
unrelated to
56.

When a bird is flying, their wings are pushing DOWN against the air. In turn, the air pushes __________ against their wings allowing them to fly.

a)

DOWN

b)

UP

c)

FORWARD

d)

BACKWARD

57.
A measure of the amount of matter in an object
a)
mass
b)
weight
c)
gravity
d)
pounds
58.
As mass increases, what happens to gravitational force?
a)
increases
b)
decreases
c)
stays the same
d)
i don't know
59.
As the distance between 2 objects increases, what happens to gravitational force?
a)
increases
b)
decreases
c)
stays the same
d)
i don't know
60.
If Earth's mass was cut in half, what would happen to your mass?
a)
increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, mass is not affected by gravitational force
61.
Scientists measure weight using which SI unit?
a)
Pounds
b)
Newtons
c)
M/S
d)
Kg
62.
What do we call the path of an object when it goes around another object?
a)
Orbit
b)
Free Fall
c)
Projectile Motion
d)
Terminal Velocity
63.
When only the force of gravity is acting on an object, we say that the object is in ___________________________.
a)
Terminal Velocity
b)
Free Fall
c)
Projectile motion
d)
Centripetal Force
64.
When an object is falling, and it reaches it's maximum speed because air resistance is equal to the force of gravity, the object has reached __________________________.
a)
Free Fall
b)
Terminal Velocity
c)
Projectile Motion
d)
Orbit
65.
If a bowling ball and a feather were dropped at the same time, in a room with no air resistance (vacuum), which object will hit the ground first?
a)
Bowling Ball
b)
Feather
c)
Both would hit at the same time
d)
Neither one would hit the ground because air is what pushing things down.
66.
If you throw a baseball straight up, what is its acceleration at the highest point?
a)
9.8 m/s2
b)
9.8 m/s
c)
0 m/s2
d)
0 m/s
67.
The shape of the path a projectile follows...
a)
circular
b)
linear
c)
wavy
d)
parabolic
68.

What is the direction of the acceleration for any projectile?

a)

The direction the projectile is traveling.

b)

Down

c)

Up

d)

Sideways

69.

If two projectiles are launched at two different heights, 2m and 10m, which one will reach the ground first?

a)

2m

b)

10m

c)

they both will hit the ground at the same time

70.

Which hits the ground first if they start at the same height: a dropped ball or a ball launched with a

horizontal velocity?

a)

the launched ball

b)

the dropped ball

c)

they both hit at the same time

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