Question

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Answer 1

As it is given as t = 0

Therefore f= 0

we have the relation v=u + at and at = 0

therefore the correct answer is v=u

OPITION D is the right answer

I hope it will helpful for u dear

Answer 2

Explanation:

Given initial velocity =u, acceleration =αt

3/2

Also we know

dt

du

=a

du=adt

Now integrating the above equation we get,

∫

u

v

du=α∫

0

t

t

2

3

dt

v−u=

5

2

αt

2

5

v=u+

5

2

αt

2

5