Question

a bus starts from rest if its veleocity becomes 72km/hr after 4s, calculate its acceleration
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Answer 1

Answer:

Here,

Initial velocity is zero at t=0,

final velocity=72×5/18=20 m/s

t=4s

a=v/t

=20/4

=5 m/s

Hope it helps you.

Thank you.

Answer 2

Step-by-step explanation:

Here,

Initial velocity is zero at t=0,

final velocity =72×185=20m/s

t=5s

a=tv=520=4m/s2