Physical Science CH 13 Laws of Motion Review

A push or a pull is called a

• Gravity

• Force

What is Newton's 2nd Law?

• For every action there is an equal and opposite reaction.

• Acceleration depends on two variables, the mass of the object and the amount of force.

What is Newton's 3rd Law?

• For every action there is an equal and opposite reaction.

• Acceleration depends on two variables, the mass of the object and the amount of force.

Looking at the image. Decide if this is balanced or unbalanced.

• Unbalanced

• Balanced

Looking at the image. Decide if this is balanced or unbalanced.

• Unbalanced

• Balanced

A dictionary weighing 15 Newtons is placed on a desk.

What is the force that the desk exerts on the dictionary?

• none

• 15 N

• 1.5 N

• 150 N

Isaac Newton stated for every action there is an

_________ and _________ reaction.

• equal and same

• equal and opposite

• unequal and same

• unequal and opposite

What does friction do to a moving object?

• Makes it rise

• Slows it down

• Speeds it up

• All of the above

How is velocity different from speed?

• Velocity is when an object goes in reverse.

• Velocity is the direction an object moves in, and it has nothing to do with speed.

• Velocity is speed and direction together.

• Velocity is not at all different from speed.

The amount of sliding friction depends on the weight of the moving object and the

• mass of the object

• direction it is traveling

• type of surface it is sliding on

• density of the object