Weekly Test-Accelerated Motion

The picture of the position vs. time graph shows an object that is...

• accelerating/speeding up
• moving at a constant speed 
• not moving 
• accelerating/slowing down. 

Determine the motion of the car.

• at rest 
• moving at constant speed
• speeding up
• slowing down

In each of the following cases, determine where the car has no acceleration ?

• A car shortly after a stoplight turns green.
• A car approaching a red light
• A car with the cruise control set at 80 km/h
• A car moving down a ramp

A car accelerates from a standstill to 70 m/s in 10 seconds.  What is the acceleration?

• 0.7m/s²
• 7m/s²
• 14m/s²
• none of the above

A roller coaster accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

• 24 m/s²
• 18 m/s²
• 16 m/s²
• 16 m/s

A drag racer accelerated from 0 m/s to 200 m/s in 5 s.  What was the acceleration?

• 0 m/s
• 40 m/s²
• -40 m/s²
• 40 m/s

The SI unit for acceleration is

• mph
• ft/sec²
• m/s²

This position vs. time graph shows an object...

• not moving

• moving with constant velocity

• moving with changing velocity

This position vs. time graph shows an object...

• not moving

• moving with constant velocity

• moving with changing velocity

This position vs. time graph shows an object...

• not moving

• moving with constant velocity

• moving with changing velocity