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25 questions
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
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
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