Holt Physical Science Chapter 8 Solutions

An object is _____ if its position changes relative to another object.

• in motion
• at reset
• a frame of refence
• magical

A place or object used for comparison to determine if another object is in motion is called a

• comparison point
• reference point
• point of view
• motion detector

A distance vs. time graph shows an object's

• frame of reference
• speed
• acceleration
• favorite food

Tags

NGSS.MS-PS3-1

Speed =

• distance / time
• time / distance
• distance * time

Tags

NGSS.MS-PS3-1

You walk 10 meters to math class in 20 seconds. Your average speed is

• 2 m/s
• 0.5 m/s
• 200 m/s
• 5 m/s

On a distance-versus-time graph, a straight line ALWAYS indicates that an object’s speed is _____.

• constant
• zero
• increasing
• decreasing

Change in speed over a given period of time is

• velocity
• motion
• speed
• acceleration

On a distance vs. time graph, the steeper the slope _____

• the slower the speed
• the faster the speed
• less acceleration
• greater acceleration

The rate at which velocity changes is called 

• motion
• average speed
• instantaneous speed
• acceleration

What is the SI unit for acceleration?

• m/s
• m
• m/s²
• s