Question

A bus moving with 45 m/s accelerates at 3 m/s² in 8 seconds. Calculate its i. Final velocity i. Distance travelled.
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Answer 1

Answer:

Ans : Given , Initial velocity,u = 45m/s

Final velocity,v = ?

acceleration = 3m/s²

time =8s

.. i)as we know the first eq. of motion

v=u+at

v =45 + 3×8

v=45+24

v=69M/s

ii)distance travelled by the bus

s =ut + ½at²

s=45×8 + ½×3×8×8

s=36+½×192

s=36+96

s =132m