Question

a bus was moving with a speed of 54 km per hour.On applying breaks it stopped in 8 seconds . calculate the acceleration

Answer 1

Heya....

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Question:- a bus was moving with a speed of 54kmper hour .on applying breaks it stopped in 8 seconds. Calculate the acceleration?

Answer:- according to the question

Initial speed V= 54km/h

So 54 *1000/3600 s

= 54*5/18=15m/s

Time (t)=8sec

Here final velocity =0

V=u+at
0=15+a*8

0=15+8a
a=-15/8 m/sec^2

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Hope it helps