Chapter 2 8th Grade Science Motion Putman

Motion is a change in ____. 

• position
• speed 
• velocity
• time

The speed you read on a speedometer is ____. a. c.  b. d.

• average speed
• instantaneous speed 
•  velocity
• constant speed 

3 m/s north is an example of a(n) ____. a.  c.  b.  d. 

• acceleration
• speed
• velocity
• position

The relationship among speed, distance, and time is ____. 

• d = t/s
• s = dt
• t = s/d
• s = d/t

A single point on a distance-time graph tells the ____.

• instantaneous speed
• constant speed
• average velocity
• average speed 

A merry-go-round horse moves at a constant speed but at a changing ____. 

• unbalanced force
• velocity
• inertia 
• balanced force

Acceleration is rate of change of ____. 

• position
•  time 
•  velocity
• force

If you ride your bike up a hill, then ride down the other side, your acceleration is ____. 

• all negative
• first positive, then negative
• all positive
• first negative, then positive

Inertia varies depending on ____. 

• mass
• motion
• force
• velocity 

Newton's first law of motion is also called the law of ____. 

• constant velocity
• force
• inertia
• mass