Motion graphs, Work & Power, and Simple Machines

Acceleration occurs when an object changes its speed or ______.

• direction
• force
• inertia
• mass

Velocity is

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

A car driving at 50 miles per hour drives for 2 hours. What distance did it cover?

• 50 miles
• 25 miles
• 100 miles
• 75 miles

What is happening at E?

• Stationary
• Accelerating
• Fast steady speed; moving away from the starting position
• Steady speed; returning to start position

Which line represents an object moving at a faster speed?

• A
• B

What is the formula for speed?

• speed = distance x time

• speed=distance / time

• speed = time / distance

• speed = distance + time

How long did it take this object to travel 10 m?

• 0 s
• 10 s
• 15 s
• 20 s

At 60 seconds, how far had this object traveled? 

• 0 m
• 10 m
• 20 m
• 40 m

Energy is

• how fast you do something.

• the ability to do work.

• confusing.

• how fast you lift something.

Jane carries a 5 kg box and Lorie carries a 10 kg box up a set of stairs, who did more work?

• Jane because his box was lighter.

• Lorie because her box weighed more.

• Can't tell.