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A car accelerates from rest at a constan...

A car accelerates from rest at a constant rate for some time after which it decelerates at a constant rate `beta` to come to rest. If the total time elapsed is t, the maximum velocity acquired by the car is given by :

A

`(ab)/((a+b))t`

B

`(ab)/((a-b))t`

C

`(at^2)/((a+b))`

D

`(tb^2)/((a+b))`

Text Solution

Verified by Experts

The correct Answer is:
B
if the car accelerates for time `t_1`, then `at_1=b (t-t_1)`
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Knowledge Check

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