Acceleration and Forces

Acceleration: is the rate of change in ___________.

• speed
• distance
• velocity 
• displacement 

Why does a car accelerate as it rounds a corner at a constant speed?

• Its direction changes

• It doesn't

• It slows down

• Its speeds up

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

• 24 m/s²

• 18 m/s²

• 16 m/s²

• 16 m/s

Tags

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The SI unit for acceleration is

• mph
• ft/sec²
• m/s²

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Which graph represents zero acceleration (constant velocity)?

• A
• B
• C
• D

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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

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NGSS.HS-PS2-1

Which of the following best describes the movement of the cyclist?

• Moving at a constant speed
• Accelerating at a constant speed
• Slowing down at a constant rate
• Moving at a constant distance per second

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You are on a skateboard slowing down. You are demonstrating....

• Negative velocity
• Negative acceleration
• Negative gravity

Name the missing force....

• weight force
• normal force
• frictional force
• tension force

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NGSS.HS-PS2-1

Name the missing force...

• weight force
• normal force
• applied force
• frictional force

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