Quiz about Forces

Question 1

What is force?

Accepted Answer

any push or pull

Answer

The rate of an object's motion with direction

Answer

The rate of an object's motion

Question 2

As force increases, acceleration __________.

Accepted Answer

increases

Answer

decreases

Answer

stays the same

Question 3

If the sum of forces is 0, the system is:

Accepted Answer

balanced

Answer

unbalanced

Question 4

What is the net force in this tug of war?

Accepted Answer

100 N

Answer

400 N

Answer

300 N

Answer

700 N

Question 5

What are balanced forces?

Accepted Answer

Equal forces that don't cause change in an object's motion

Answer

The resistance in motion

Answer

The total force of an acting object

Answer

Unequal forces that cause change in an object's motion

Question 6

What happens when forces are unbalanced?

Accepted Answer

It will cause change in the object's motion

Answer

It will not cause change in the object's motion

Question 7

Newton is the unit for force.

Accepted Answer

True

Answer

False

Question 8

A bowling ball knocking over pins?

Accepted Answer

Unbalanced

Answer

Balanced

Question 9

A cookie on a plate?

Accepted Answer

Balanced

Answer

Unbalanced

Question 10

A book sitting on a shelf?

Accepted Answer

Balanced

Answer

Unbalanced

Question 11

Pushing a lawnmower across the yard?

Accepted Answer

Unbalanced

Answer

Balanced

Question 12

As mass increases, acceleration _________.

Accepted Answer

decreases

Answer

increases

Answer

stays the same

Question 13

the combination of all forces acting on an object

Accepted Answer

net force

Answer

balanced forces

Answer

gravity

Answer

unbalanced forces

Question 14

forces that are equal in size, but opposite in direction

(0 Newtons)

Accepted Answer

balance forces

Answer

unbalanced forces

Answer

net force

Answer

weight

Question 15

forces that cause a change in the motion of an object

Accepted Answer

unbalanced forces

Answer

balanced forces

Answer

net force

Answer

velocity

Question 16

force that opposes (goes against) the motion of an object

Accepted Answer

friction

Answer

gravity

Answer

weight

Answer

mass

Question 17

force of attraction between all objects in the universe

Accepted Answer

gravity

Answer

friction

Answer

weight

Answer

mass

Question 18

An object drops due to the force of _____________.

Accepted Answer

gravity

Answer

inertia

Answer

momentum

Answer

friction

Question 19

This type of force resist motion between two surfaces that are pressed together

Accepted Answer

friction

Answer

contact

Answer

gravity

Question 20

Is it BALANCED?

Accepted Answer

No

Answer

Yes

Question 21

What is the unit for FORCE?

Accepted Answer

N (Newtons)

Answer

lbs (pounds)

Answer

g (grams)

Answer

m/s (meters per second)

Question 22

What is the net force?

Accepted Answer

3 N, right

Answer

3 N

Answer

17 N, right

Answer

3 N, left

Question 23

Two people are pushing a disabled car. One exerts a force of 200 N east, the other a force of 150 N east. What is the net force exerted on the car?

Accepted Answer

350 N east

Answer

50 N east

Answer

50 N west

Answer

350 N west

Question 24

If there are two forces going in the same direction how would you find the net force?

Accepted Answer

Add

Answer

Subtract

Answer

Neither

Answer

Multiply

Question 25

What force are you demonstrating when you stand on the ground?

Accepted Answer

Normal Force

Answer

Gravitational Force

Answer

Friction

Answer

Applied Force

Question 26

What force are you demonstrating when you bring the north and south poles of a magnet together?

Accepted Answer

Magnetic Force

Answer

Electrical Force

Answer

Contact Force

Answer

Friction

Question 27

What force are you demonstrating when you pull a cup towards you?

Accepted Answer

Applied Force

Answer

Gravitational Force

Answer

Normal Force

Answer

Friction

Question 28

Why is it harder for the boy in Image B to get down the hill?

Accepted Answer

Friction

Answer

Motion

Answer

Work

Answer

Displacement

Question 29

What pulls a ball back to earth?

Accepted Answer

Gravity

Answer

Gas

Answer

Friction

Answer

Molecules

Question 30

John pushed two identical toy cars across the same flat smooth floor. Why did both cars travel the same distance?

Accepted Answer

because he applied the same force to each of the two cars

Answer

because he applied different forces to the two cars

Answer

because he pushed the cars at the same time

Answer

because he pushed the cars at different times

Question 31

As Chris and his dad add items to their shopping cart, which will most likely occur?

Accepted Answer

The cart will become more difficult to move because the items will increase the mass of the cart.

Answer

The cart will become easier to move because the items will increase the mass of the cart.

Answer

The cart will become more difficult to move because the items will decrease the mass of the cart.

Answer

The cart will become easier to move because the items will decrease the mass of the cart.

Question 32

Ana is pushing a wheelbarrow of rocks. She stops and unloads half of the rocks. How will this effect the force needed to move the wheelbarrow?

Accepted Answer

Mass is decreased, making the wheelbarrow easier to move.

Answer

Gravity is decreased, making the wheelbarrow harder to move.

Answer

Gravity is increased, making the wheelbarrow easier to move.

Answer

Friction is increased, making the wheelbarrow harder to move.

Question 33

You are helping a friend push a box on the ground. You notice it's much more difficult to push when the box is on carpet instead of the hardwood floor. This can be explained using which science term?

Accepted Answer

Friction

Answer

Force

Answer

Gravity

Question 34

What does Newton's Third Law of Motion refer to?

Accepted Answer

for every force, there is an equal and opposite force

Answer

an object at rest will stay at rest

Answer

energy is changed from potential to kinetic energy

Question 35

When forces on an object are balanced, what is the force?

Accepted Answer

Zero

Answer

Five

Answer

Ten

Answer

Six

Question 36

Newton's third law states that any action will have a(n) _______ and ______ reaction

Accepted Answer

Equal and opposite

Answer

Equal and similar

Answer

Equal and different

Answer

Greater and opposite

Question 37

A forces applied when the objects involved are in direct contact.

Accepted Answer

Contact forces

Answer

Normal forces

Answer

Non-contact forces

Question 38

Is the force usually exerted by a surface on an object that is resisting against it.

Accepted Answer

Normal force

Answer

Friction

Answer

Elasticity

Answer

Tension

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