Question

A bus is travelling at velocity 20 mtr sec it take time 4 sec. Find the accelaration

Answer 1

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it is your answer ....
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we know that .....
acceleration
= (change in velocity)/ time
it is given.....
time = 4 second
initial velocity = 20 m/s
final velocity = 0 m /s
so...
change in velocity
= 0 -20 =-20m /s
now .......
acceleration.
= -20/ 4 =-5m/s^2
so... acceleration is -5m/s^2
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