Chapter 7 Key words

A _____ is any push or pull from one object to another

• Force

• Motion

• Work

• Inertia

--------------- is a force that opposes the motion of one object moving past another

• Friction

• Work

• Gravity

• Motion

What kind of forces point in opposite directions, and they always add up to zero?  

• unbalanced forces

• balanced forces

What kind of force causes an object to change its motion?

• Balanced forces

• unbalanced forces

Which law is described below?

“An object at rest tends to stay at rest, and an object in motion tends to stay in motion, unless acted upon by an unbalanced force.”

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

Which law is described below?

All forces occur in pairs, and these two forces are equal in strength and opposite in direction. 

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

When an object moves through air, the air hits the object and slows it down. 

• Gravity 

• Air Resistance 

• Weight 

The push of the first object is called?

• Action Force

• Reaction force

Force that pulls all objects together, big or small.

• Gravity 

• Air Resistance 

• Weight 

What is the location of an object?

• position

• motion

• speed