Question

a truck travelling at 54km is slow down to 36km in 10seconds find the retardation

Answer 1

initial speed of earth is 54 kilometre per hour after 10 second its speed is 36 km per hour therefore change in speed is 18 km per hour
Is retardation is equals to total total change in velocity/ time taken
which is equals to 18 upon 10
18/10= 18m/s^2

Hope this will help you out

Answer 2

initial velocity = 54 km/ h
final velocity = 36 km / h
time = 10 sec
acceleration =( v - u ) / t
( 54 -36 ) km / h / 10 sec
18 / 10 = 1.8 km / sec
1800 m / sec.....
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