Question

suppose the particle starts from rest , then the velocity v is
a) v = -gt
b) v = gt
c) v =u+at
d) zero​

Answer 1

The answer is c
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Answer 2

The final velocity of a particle when it starts from rest is option (b) v = gt

Given :

The particle starts from rest. Therefore,

u = 0

To find :

The final velocity (v).

Solution :

We know that

v = u + at

As the particle starts from rest, u = 0

Therefore,

v = gt  {a=g}

So, The final velocity of a particle when it starts from rest is v = gt

Hence proved.

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