Motion Quiz #2

A car starts at a velocity of 20 m/s and accelerates at 5 m/s² for 10 seconds. What is the velocity of the car after the 10 seconds?

• 25 m/s

• 70 m/s

• 110 m/s

• 35 m/s

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Which runner accelerated?

• A

• B

• C

• All of them

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Which of the following is a unit for acceleration?

• km/s
• m/s²
• mi/hr
• ft

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Acceleration of an object happens when things ________

• slow down

• speed up

• change direction (turn)

• All of the above

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What motion does this graph represent?

• No motion

• Constant Velocity

• Positive Acceleration

• Negative Acceleration

What motion does this graph represent?

• no motion

• constant velocity

• positive acceleration

• negative acceleration

The value (g) is defined as

• acceleration of all objects in motion

• acceleration of objects moving horizontally

• acceleration of gravity

• I only care about OGs

If a car is traveling forward at 15 m/s, how fast will it be going in 1.2 seconds if the acceleration is -10 m/s/s?

• 27 m/s
• 3 m/s
• -27 m/s
• -3 m/s

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A roller coasters 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

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When a car goes around a corner at 20 mph, why do we say it  accelerates?

• The car is accelerating because of the velocity is constant
• The car accelerates because it's going 20 mph
• Cars always accelerate when they are in motion
• The car is accelerating because it's changing direction

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