Acceleration Review 2

the unit of acceleration is

• (m/s²)

• jouls

• m

• s

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A negative acceleration means that your object is  

• constant

• speeding up

• at rest

• slowing down

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Which of the following objects is accelerating?

• A car driving in a northwest at a constant speed of 35 mph.

• A car driving southwest at a constant speed of 35 mph.

• A car driving in a circle at a constant speed of 35 mph.

  Back

• A car driving south at a constant speed of 45 mph.

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A box sliding down an inclined plane attains a velocity of 27 m/s in 3 seconds from rest.  Find the acceleration.

• 30 m/s
• 24 m/s²
• 9 m/s²
• 81 km/hr

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What is happening in this graph from point A to B?

• The object is accelerating.
• The object is not moving.
• The object is decelerating.
• The object is moving at a constant speed.

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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. 

Select the description of motion from A - B.

• Slowing down away from the origin

• Speeding up away from the origin

• Constant velocity away from the origin

• Constant velocity towards the origin

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The rate at which velocity changes and can be seen by speeding up, slowing down, or changing direction:

• Speed

• Velocity

• Acceleration

• Slope

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A roller coasters accelerates from an initial velocity of 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

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A golf ball accelerates off a tee at 15m/s², changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?

• 750 seconds
• 35 seconds
• 0.3 seconds
• 3.3 seconds

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