Motion and Speed

_ describes the location of an object.

• Reference point

• Position

• Speed

• Velocity

A _ is a location to which you compare other locations.

• position

• reference point

• velocity

• direction

_ is a change in position over time.

• Location

• Velocity

• Speed

• Motion

The _ of an object is a measure of how far something moves in a given amount of time.

• direction

• motion

• speed

• velocity

Tags

NGSS.MS-PS3-1

_ is a way to calculate the speed of an object that may not always be moving at a constant speed.

• Velocity

• Friction

• Average speed

• Motion

Speed can be calculated by dividing the distance an object travels by the time it takes to cover the distance. Choose the correct formula.

• D=m/v

• s=d/t

• s=dt

• s=t/d

A penguin swimming underwater goes 20 meters in 8 seconds. What is its average speed? s=d/t

• 2 m/s (meters per second)

• 3 m/s (meters per second)

• 2.5 m/s (meters per second)

This runner completed a 100-meter race with a time of 13.75 seconds. What was her average speed? s=d/t

• 6 m/s

• 7 m/s

• 8 m/s

• 7.3 m/s

A _ is a quantity that has both size and direction.

• speed

• velocity

• vector

_ is speed in a specific direction.

• Vector

• Acceleration

• Velocity

• Time