Ch. 11 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

Jane is sitting in her car. Her mother is driving her from their house to the library. Jane waves as she passes her friend Marina. Which of the following is NOT moving with respect to Jane?

• Marina
• the car
• the library
• Jane's house

A distance vs. time graph shows an object's

• frame of reference
• speed
• acceleration
• favorite food

Tags

NGSS.MS-PS3-1

The SI unit for speed in science.

• miles per hour (mi/hr)

• meters per second (m/s)

• inches per year (in/yr)

• feet per second (ft/s)

Velocity is

• speed and acceleration
• constant speed
• a frame of reference
• speed in a given direction

Speed =

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

Tags

NGSS.MS-PS3-1

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

• constant

• zero

• increasing

• decreasing

A horizontal line on a distance vs. time graph means the object's speed is

• increasing
• decreasing
• zero

Acceleration is

• increasing speed
• decreasing speed
• changing direction
• all of the above

Tags

NGSS.MS-PS2-2

A car driving 100 miles per hour hits the brakes and slows to 50 miles per hour. This is an example of negative acceleration. True or False?

• True
• False