Answer to Question #187719 in Physics for Nafees Al Mostafa

Question

A car decelerates uniformly from 20 ms-1

to rest in 4 s, then reverses with uniform acceleration

back to its original starting point, also in 4s.

(i) draw a velocity-time graph for this journey and calculates the average velocity.

(ii) draw a speed-time graph for this journey and calculates the average speed.

Answer 1

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