Question 1

What is the net force of the boat?

Accepted Answer

550 N right

Answer

550 N left

Answer

1400 N right

Answer

1400 N left

Question 2

What is the net force of the box?

Accepted Answer

814 N right

Answer

52 N left

Answer

814 N left

Answer

52 N right

Question 3

What is the net force of the rocket?

Accepted Answer

3200 N up

Answer

7800 N up

Answer

7800 N down

Answer

3200 N down

Question 4

What is the best example of an unbalanced force?

Accepted Answer

A train accelerating from the station

Answer

A car driving at a constant speed

Answer

A chair sitting motionless

Answer

A book sitting on the shelf

Question 5

Which is an example of the law of inertia? (Newton's First Law)

Accepted Answer

When the car brakes, your body continues moving forward and is stopped by the seat belt

Answer

A rocket fuel ignites and pushes DOWN and the rocket moves UP

Answer

It takes more force to move a piano than to move a chair.

Question 6

Which is an example of Newton's Second Law? (Force = Mass times Acceleration)

Accepted Answer

It takes more force to move a piano than to move a chair.

Answer

A rocket fuel ignites and pushes DOWN and the rocket moves UP

Answer

When the car brakes, your body continues moving forward and is stopped by the seat belt

Question 7

Which is an example of Newton's Third Law (Every action has an equal and opposite reaction)

Accepted Answer

A rocket fuel ignites and pushes DOWN and the rocket moves UP

Answer

When the car brakes, your body continues moving forward and is stopped by the seat belt

Answer

It takes more force to move a piano than to move a chair.

Question 8

A student reads his paper on friction to the class. Which statement should he include in his paper if he wants to present accurate information?

Accepted Answer

Friction is in the opposite direction of the movement.

Answer

Friction reduces the amount of work needed to move an object

Answer

Friction only happens with solid objects, not liquids or gases.

Answer

Friction makes movement of objects easier

Question 9

What is the force that all objects have in relation to all other objects? (The amount of the force is based on the mass of the objects)

Accepted Answer

gravity

Answer

magnetism

Answer

friction

Answer

electricity

Question 10

A force can:

Accepted Answer

All of these!

Answer

slow an object down

Answer

make a moving object stop moving

Answer

make an object move

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