Unit 1: Forces and Motion - Lesson 2 - Part 1

An arrow can be used to represent a force. The length of the arrow represents ____________.

• direction of the force
• strength of the force
• mass of the force
• acceleration of the force

The force that opposes motion is ________.

• a balanced force
• an unbalanced force
• an accelerating force
• friction

The upward force on an object falling through the air is ______.

• air resistance
• inertia
• gravity
• terminal velocity

Gravitational force exerted on an object

• mass
• weight
• gravity
• force

The unit of force is ______.*

• grams
• liters
• newtons
• kilograms

A push or a pull on an object by another object touching it

• force
• contact force
• noncontact force
• gravity

Attractive force that exists between all object that have mass.

• mass
• weight
• gravity
• friction

Amount of matter in an object

• weight
• force
• mass
• colume

Force that resists the motion of two surfaces that are touching

• friction
• sliding
• contact force
• noncontact force

a force one object can apply to another object without touching it

• contact force
• force
• noncontact force
• friction