Unit 7: Concept 1 Newton's Laws of Motion

Unit 7: Force and Motion

Concept 1: Newton's Laws

Multiple Choice

A FORCE, in general, is defined as:

• a push or pull

• the power used by Jedi

• work

• energy

Multiple Choice

The NET Force is

• The sum of all forces (including direction)

• The sum of all forces (without direction)

Multiple Choice

A BALANCED force means the forces are _________ in size and in the _________ direction.

• equal/opposite

• equal/same

• unequal/opposite

• unequal/same

Multiple Choice

An UNBALANCED force means the forces are _________ in size and opposite in direction.

• equal

• not equal

Multiple Choice

Newton's 1st Law states that objects in motion will do what?

• Stay moving at a constant velocity

• Slowly decrease velcity

• Stop abruptly

Multiple Select

Which law states the objects tend to resist a change in their motion?

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

• The Law of Intertia

Multiple Choice

Which friction occurs between two surfaces that are not moving?

• Static

• Sliding

• Rolling

Multiple Choice

Which friction occurs between two surfaces that are sliding?

• Static

• Sliding

• Rolling

Multiple Choice

Which friction occurs between two surfaces where 1 is rolling?

• Static

• Sliding

• Rolling

Multiple Choice

Is air resistance a type of friction?

• yes

• no

Multiple Choice

Forces cause acceleration.

• True

• False

Multiple Choice

Which would require more force to accelerate?

• Pushing a 5 kg object

• Pushing a 10 kg object

Multiple Choice

Newton's 3rd Law always involves a pair of objects?

• True

• False

Multiple Choice

Every action has an equal and opposite reaction. What is the best example of Newton's 3rd Law?

• I push against a door and it opens.

• I push a chair and it falls over.

• I push back on the floor and the floor pushes forward on me.

• I push a water bottle and it slides across the table.