Question

a bus is moving with constant speed 72 kilometre per hour a driver applies for break a bus stop after travelling 200 what is retardation reduce by bus
​

Answer 1

Explanation:

initial velocity-72 km/hour or 20 m/s

final velocity-0

displacement-200m

let time taken be t secs.

therefore,

v^2=u^2+2as

0=5184+2×a×200

a=-12.96m/s^2

therefore,

retardation=12.96m/s^2