Question

an object is moving with the velocity 20 metre per second and suddenly applied brake and stopped in in 2 seconds what is it acceleration
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Answer 1

Answer:

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Answer 2

Answer:

Retardation =2ms

−2

Time =5s

So, decrease in velocity = retardation × time =(2×5)ms

−1

=10ms

−1

Initial velocity =20ms

−1

So, final velocity = (initial velocity) − (decrease in velocity) =(20−10)ms

−1

=10ms

−1