Question

A truck traveling at 54 km/h is slow down to 36 km/h in 10 sec. Find the retardation

Answer 1

The truck is travelling with a initial velocity of V=54m/s.


The truck is travelling with a final velocity of u=36m/s.

acceleration=V-U/T.




given time =10s.

so. 36-54/10
=-18/10
=-1.8


so. the retardation is 1.8 negative.



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Answer 2

Answer:

1.8 -ve

Explanation:

initial velocity = 54m/s

final velocity = 36m/s

acceleration = final velocity - initial velocity/time

time given = 10 sec

acceleration = 36 m/s - 54 m/s / 10 sec

acceleration = -18/10

acceleration = -1.8

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