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Newton's Laws of Motion review

Total questions: 50

Worksheet time: 32mins

Name
Class
Date
1.
One object has twice as much mass as another object. The first object also has also twice as much...
a)
velocity
b)
gravitational acceleration
c)
inertia
d)
all of these
2.
If a ball of cheese is fired into frictionless space, the amount of force needed to keep it going equals
a)
twice the force with which it was fired
b)
the same amount of force with which it was fired
c)
1/2 the force with which it was fired
d)
zero, since no force is requires to keep it moving. 
3.
If a 10 kilogram object accelerates suddenly at 15 m/s2, how much force was applied to the object?
a)
150 Newtons
b)
15 Newtons
c)
150 kilograms
d)
100 kilograms
4.
A(n) __________ is a push or pull.
a)
newton
b)
acceleration
c)
force
d)
momentum
5.
Which best explains why we are able to accelerate forward when starting to run?
a)
As one leg moves backward, it provides an equal and opposite force for the other foot to move forward.
b)
No acceleration takes place. Runners are always at a fixed velocity.
c)
The striking foot pushes backward against the ground. The friction with the ground provides an equal and opposite force forward.
d)
The runner's upper body quickly leans forward, causing the entire body to begin accelerating forward
6.
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. 
d)
Friction 
7.
The measure of the pull of gravity on an object is ___________________.
a)
motion
b)
weight
c)
speed
d)
friction
8.
According to Newton’s Law of Inertia, which of the following objects will change its motion?
a)
A bike rider on a smooth and level road, pedaling at a constant rate.
b)
A train pulling on another train, each with the same amount of force.
c)
A chair sitting on the floor with balanced forces acting in opposite directions.
d)
A ball rolling across the floor with friction acting in the opposite direction.
9.
A bowling ball is rolled with a certain speed and strikes a bowling pin with a force indicated by the arrow in this illustration. When the bowling ball strikes the bowling pin, the force applied by the pin to the ball -
a)
depends on the mass of the bowling pin.
b)
is equal to the force applied by the ball.
c)
must be zero, since the pin is not moving.
d)
is equal to the force of gravity on both.
10.
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
11.
When forces are _________ the object DOES NOT move.
a)
unbalanced
b)
balanced
c)
heavy
d)
light
12.
Definition of Velocity?
a)
any change in velocity
b)
specific speed
c)
speed in a specific direction
d)
speed in a specific number
13.
During a demonstration of Newton’s laws of motion, a student used the setup shown in Figure 1. The student flicked the index card with a fingertip, and the coin fell straight down into a plastic cup as shown in Figure 2. Which of these best explains why the coin fell straight down into the cup instead of remaining on the index card?
a)
The coin was at rest until the card was removed, so it tended to remain in the same location. Once the card was gone, the unbalanced force of gravity caused the coin to fall.
b)
Moving the card applied an action force on the coin. Since the card was gone, gravity applied a reaction force on the coin.
c)
The card had less mass than the coin, so a smaller force of gravity acted on the card. The larger force of gravity on the coin made it fall.
d)
The acceleration of the coin falling into the cup was equal and opposite to the acceleration of the card.
14.
Safety belts protect people in cars in the event of an accident because, according to Newton’s Laws of Motion, when an impact causes the car to suddenly change its motion, -
a)
the people in the car will continue to move in the same direction and at the same speed as before the impact.
b)
the speed of the car always increases, giving it greater force since the mass will remain the same.
c)
the speed of the people always increases, since now they have, not one, but two forces acting on them.
d)
the car now has a greater overall mass - its own mass plus the mass of the object by which it has been struck.
15.
A 70-kg adult and a 35-kg child face each other on ice skates. Applying Newton’s Laws of Motion, what will happen if the two skaters push against each other?
a)
The adult will move backward, and the child will not move.
b)
The adult will not move, and the child will move backward.
c)
They will both move backward at the same speed.
d)
They will both move backward, but the child will move at a faster speed.
16.
Which of the following describes an application of Newton’s Law of Inertia?
a)
A car stops suddenly, but the passengers in the car are thrust forward into the seat belts.
b)
The force pushing downward on a box is equal to the force pushing upward on the box
c)
Earth’s tectonic plates collide with equal force and equal acceleration.
d)
The force of gases pushing downward from a rocket launch the rocket upward against gravity
17.

According to Newton's Second Law, How do you calculate force?

a)

Multiply mass and acceleration

b)

Divide mass by acceleration

c)

Divide acceleration by mass

d)

Divide force by mass

18.

According to Newton's Second Law, How do you calculate mass?

a)

Multiply mass and acceleration

b)

Divide force by acceleration

c)

Divide acceleration by mass

d)

Divide force by mass

19.

According to Newton's Second Law, How do you calculate acceleration?

a)

Multiply mass and acceleration

b)

Divide force by acceleration

c)

Divide acceleration by mass

d)

Divide force by mass

20.
Newton's Second Law  of motion connects force, acceleration and mass: it explains that an object acted upon by a force will accelerate in the ____________ of the force.
a)
Sliding
b)
Gravity
c)
Direction
d)
Static
21.
In a circular motion, this force is always perpendicular to the motion.
a)
Terminal Velocity
b)
Gravity
c)
Centripetal
d)
Static
22.
Two or more equal forces whose effects cancel each other out and do not change the motion of an object. 
a)
Balanced Forces
b)
Unbalanced Forces
c)
Weight
d)
Newton
23.
Two or more unequal forces acting on an object causing the object to accelerate. 
a)
Balanced Forces
b)
Unbalanced Forces
c)
Friction
d)
Weight
24.

A student lets a toy car roll four times down a ramp. Each time the student covers the surface of the ramp with a different material. The student measures and records the time it takes the car to roll down the ramp. Which of these would be the best conclusion based on the data in the table?

a)

Different surfaces affect how fast a toy car accelerates.

b)

Different toy cars travel at different speeds.

c)

Gravity has little effect on the speed of toy cars on different surfaces.

d)

Air resistance is the greatest factor in limiting the acceleration of different toy cars.

25.
According to Newton’s Third Law, if someone jumps off a skateboard, the skateboard will roll backwards because -
a)
the mass of the skateboard is the same as the mass of the person jumping off.
b)
the pull of gravity on the person is the same as on the skateboard, regardless of size.
c)
the air resistance on the person is great and the friction on the skateboard is small.
d)
for the force that sent the person forward, there is an equal force pushing back on the skateboard.
26.
Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when both cars apply brakes at the same time to stop?
a)
The car with the smaller mass will require less forces to stop than the car with the larger mass.
b)
The car with the larger mass will amintain its velocity while traveling down the hill.
c)
The car with the smaller mass will take longer to stop than the car with the larger mass.
d)
The car with the larger mass will have less inertia than the car with the smaller mass.
27.
The formula we get from the second law is...?
a)
F = m*a
b)
v = d/t
c)
a = v/t
d)
f = 1/T
28.
When a heavy football player and a light one run into each other, who exerts more force?
a)
The heavy one
b)
The light one
c)
They are equal
d)
there is no such thing as force
29.
A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
30.

Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more mass.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

None of them

31.

A basketball player pushes off of the floor to shoot a lay up. As the student exerts force on the floor, which of these also occurs?

a)

The floor exerts an equal and opposite force on the basketball player.

b)

The floor exerts a downward force toward the center of Earth.

c)

The floor begins to accelerate toward the student.

d)

The floor does not exert any force.

32.

Calculate the total force from the diagram above. Which direction will they move and by how much force?

a)

25 N west

b)

25 N east

c)

375 N West

d)

No motion

33.

If a car is in an accident, air bags and seat belts may help reduce injury to a passenger by

decreasing the force that stops the passenger’s motion. The force is reduced because the seat belts or air bags decrease the -

Group of answer choices

a)

acceleration of the passenger

b)

mass of the passenger

c)

reaction time of the driver

d)

speed of the vehicle

34.

The picture above shows a student about to throw a ball while standing on a skateboard. Which direction will the skateboard move when she throws the ball?

a)

backward

b)

foward

c)

no motion

d)

upward

35.
Newton's third law states that any action will have a(n) _______ and ______ reaction
a)
Equal and similar
b)
Equal and opposite reaction 
c)
Equal and different
d)
Greater and opposite
36.

What unit is force measured in?

a)

kilograms

b)

meters per second squared

c)

Newtons

d)

kilometers

37.

What is the tendency for an object to resist a change in motion?

a)

speed

b)

velocity

c)

acceleration

d)

inertia

38.

Which law? When you paddle your canoe, the canoe goes backwards.

a)

Newton's First Law

b)

Newton's Second Law

c)

Newton's Third Law

39.

Which law? A person traveling in a car that suddenly stops, the loose packages continue to move forward.

a)

Newton's First Law

b)

Newton's Second Law

c)

Newton's Third Law

40.

Which law? An ice skater pushes harder with his leg muscles, and he begins to move faster.

a)

Newton's Frist Law

b)

Newton's Second Law

c)

Newton's Third Law

41.

Which law? A rocket lifting off the ground into space can be explained by _____________________.

a)

Newton's First Law

b)

Newton's Second Law

c)

Newton's Third Law

42.

Which law? A soccer ball remains motionless until it is moved by the unbalanced force of a player's foot.

a)

Newton's First Law

b)

Newton's Second Law

c)

Newton's Third Law

43.

A volleyball is hit and experiences a net force of 2 N, which causes the ball to accelerate at 8 meters/second squared. What is the mass of the volleyball?

a)

16 kilograms

b)

0.25 kilograms

c)

0,25 Newtons

d)

16 meters/second squared

44.

What is the net force?

a)

400 N Up

b)

400 N Down

c)

800 N Up

d)

800 N Down

45.

when you sit on a chair the net external force on you is

a)

zero

b)

up

c)

down

d)

depends on your weight

46.
What is the net force of the bottom picture?
a)
100 W
b)
700 W
c)
100 N
d)
700 N
47.
What is the net force of the object?
a)
10 N
b)
25 N
c)
5 N
d)
0 N
48.
Force is a vector because 
a)
it has size
b)
it has direction
c)
it has both size and direction
49.
Acceleration is
a)
increasing speed
b)
decreasing speed
c)
changing direction
d)
all of the above
50.
Newton's Third Law of Motion is best defined by which statement?
a)
A body at rest tends to remain at rest.
b)
A body in motion tends to remain in motion unless acted on by another force.
c)
For every action there is an equal and opposite reaction.
d)
Inertia, it is all about inertia and speed and motion.

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