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The greatest acceleration or deceleratio...

The greatest acceleration or deceleration that a train may have is a. The minimum time in which the train can get from one station to the next at a distance s is:

A

`sqrt((s)/(a))`

B

`sqrt((2s)/(a))`

C

`2sqrt((s/a))`

D

`1/2 sqrt((s)/(a))`

Text Solution

Verified by Experts

The correct Answer is:
c
Here let the acceleration and retardaion take place for `t/2` sec each. Then
`S=(1)/(2)((at^(2))/(2))xxt` or `(at^(2))/(4)=S` or `t=2sqrt((S)/(a))`
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