If bus travelling at 20m/s is subject to steady deceleration of 5m/s,

1.	If bus travelling at 20m/s is subject to steady deceleration of 5m/s, how long will it take to came to rest ?
Answer» Given:- •Initial velocity(u)=20m/s •Deceleration=5m/s² =>Thus,acceleration(a)= -5m/s² •Final velocity(v)=0 (as finally the bus'll come to rest) To find:- •Time taken by the bus to come to rest(t) Solution:- By,using the 1st equation of motion,we get------- =>v=u+at =>0=20+(-5)t =>0-20= -5T =>-20=-5t =>t= -20/-5 =>t=4s Thus,the bus will take a time of 4 seconds to come to rest.

If bus travelling at 20m/s is subject to steady deceleration of 5m/s, how long will it take to came to rest ?

Answer»

Given:-

•Initial velocity(u)=20m/s

•Deceleration=5m/s²

=>Thus,acceleration(a)= -5m/s²

•Final velocity(v)=0 (as finally the bus'll come to rest)

To find:-

•Time taken by the bus to come to rest(t)

Solution:-

By,using the 1st equation of motion,we get-------

=>v=u+at

=>0=20+(-5)t

=>0-20= -5T

=>-20=-5t

=>t= -20/-5

=>t=4s

Thus,the bus will take a time of 4 seconds to come to rest.

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