Question

A car accelerates from rest at a constant rate a
for some time, after which it decelerates at
constant rate b and come to rest. If the total time
elapsed is t, the maximum velocity acquired by the
car will be​

Answer 1

Answer:

ANSWER

From rest, the car acceleraters for time t,

So α=

t

1

V

...(1) , let maximum velocity is V.

The car begins decelerate after attaining maximum velocity

β=

t−t

1

V

....(2)

By adding 1 and 2

t=v(

α

1

+

β

1

v=

α+β

(αβ)t