Question

15. (a) Define acceleration.

(b) What do the four velocity-time graphs A, B, C and D represent?

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Answer 1

Acceleration is the rate of change of velocity with time.

A)-acceleration is constant and positive since velocity is uniformly increasing.

B)-acceleration is zero since velocity is constant.

C)-acceleration is uniformly increasing since velocity time graph is an upward parabola(v=t^2)

D)-acceleration is uniformly decreasing since velocity Time graph is downward parabola(v=-t^2)

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