Describing Motion

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

Speed =

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

Tags

NGSS.MS-PS3-1

A distance-time graph shows an object's

• frame of reference

• speed

• acceleration

• favorite food

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-time graph, a horizontal 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

What is the SI unit for acceleration?

• m/s
• m
• m/s²
• s

Tags

NGSS.HS-PS2-1

When something has speed in a certain direction it is called ___________.

• motion
• position
• velocity
• speed

Acceleration of an object happens when things ________

• slow down
• go faster
• change direction (turn)
• All of the above

Tags

NGSS.MS-PS2-2

Which would NOT make a good reference point?

• Northwest Middle School

• A chair

• A moving child