Forces and Motion

A change in speed or direction

• moving

• accelerating

• speed

• sliding

Velocity is _____

• speed in a given direction

• acceleration in a given direction

• gravity in a given direction

• inertia in a given direction

The SI unit for acceleration is

• m/s

• m²/s

• m/s²

• m³

A push or a pull

• gravity

• force

• inertia

• friction

Select all examples of acceleration

• falling at a constant rate

• speeding up while driving

• spinning on a carnival ride

• braking for a stoplight

The SI unit for force is

• grams

• meters

• liters

• newtons

The force that occurs when two surfaces rub against each other

• net force

• friction

• gravity

• inertia

The total amount of force acting on an object

• gravity

• acceleration

• velocity

• net force

Friction occurs

• in the opposite direction

• in the same direction

• only when things move

• only when things stay still

Inertia is greater when objects

• have greater mass

• have less mass

• are balanced

• take up more space