Newton's Laws Lesson

Multiple Choice

The unit for force is called a: 

• Galileo (g)

• newton (N)

• Aristotle (A)

Multiple Choice

The overall force acting on an object after all the forces are combined is called a 

• net force
• unbalanced force
• balanced force

Multiple Choice

What is a force?

• the PUSH or PULL on an object 
• The MOTION an object creates
• The objects HITTING one another
• Going REALLY FAST

Multiple Choice

What are balanced forces?

• forces of the same size, in opposite directions
• the same size in the same direction
• forces in opposite directions
• forces at right angles to each other

Multiple Choice

You and your friend are moving the couch from one side to another. Your friend pushes with a force of 35 N to the right and you push with a force of 25 N right. What is the net force on the couch?

• 60 N right
• 10 N left
• 60 n right
• 50 N left

Multiple Choice

What is the net force?

• 40 N left
• 0 N Balalnced
• 400 N right
• 40 N right

Multiple Choice

What is the net force?

• 400 N Up
• 400 N Down
• - 400 N Down
• 800 N Down

Multiple Choice

Calculate the resultant force.

• 40N, Left

• 40N, Right

• 0N, Balanced

• 75N, Right

Multiple Choice

You push on a tree with 20 N of Force. If the tree doesn't move, the tree is pushing back on you with _____of Force.

• 20 N 
• 40 N 
• 10 N 
• 0 N

Multiple Choice

What is the net force?

• 17 N Right
• 3 N Right
• 3 N Left
• 17 N Left

Multiple Choice

An object with a mass of 2.0 kg accelerates 2.0 m/s² when an unknown force is applied to it. What is the amount of the force?

• 4 N
• 0.4 N
• 1 N
• 0.1 N

Multiple Choice

An object with a mass of 5.0 kg accelerates 8.0 m/s² when an unknown force is applied to it. What is the amount of the force?

• 40 N
• 4 N
• 10 N
• 0.1 N

Multiple Choice

An object accelerates 5 m/s² when a force of 20 newtons is applied to it. What is the mass of the object?

• 4 kg

• 20 kg

• 0.5 kg

• 2 kg

Multiple Choice

An object with a mass of 2.0 kg has a force of 4.0 newtons applied to it. What is the resulting acceleration of the object?

• 2 m/s²

• 8 m/s²

• 0.5 m/s²

• 6 m/s²

Multiple Choice

An object with a mass of 5 kg has a force of 20 newtons applied to it. What is the resulting acceleration of the object?

• 2 m/s²

• 8 m/s²

• 4 m/s²

• 6 m/s²

Multiple Choice

Newton’s 3rd law states that for every action, there is an equal and _______ reaction.

• balanced

• opposite

• unbalanced

Multiple Choice

Forces always occur _______.

• in the same direction

• alone

• in pairs

Multiple Choice

Newton’s 3rd law is also known as the law of _______.

• inertia

• action & reaction

• force & acceleration

Multiple Choice

A rock on the ground weighs 40 N. How much force does the ground exert on the rock?

• 20 N

• 0 N

• 40 N

Multiple Choice

The bat hits a ball. What is the reaction force?

• gravity pulling the ball down

• the ball hits the bat

• air resistance slowing the ball down

Multiple Choice

You sit in a chair. You push the chair down. What is the reaction force?

• Gravity pushes the chair up.

• The chair pushes you down.

• The chair pushes you up.

Multiple Choice

Gravity pulls a skydiver down as air friction (drag) pushes the skydiver up. Is this an action-reaction pair?

• No, because both forces are acting on the skydiver.

• Yes, because there are two forces involved.

• Yes, because the forces are equal and opposite.

Multiple Choice

A bug hits a windshield. The force of the bug on the windshield is _______ the force of the windshield on the bug.

• greater than

• less than

• the same as

Multiple Choice

When you push on a wall, the wall pushes on you.

• True

• False