Question

A body starts from rest and acquires a velocity 10 ms¯¹ in 2 s. Find the acceleration.

Answer 1

Hii friend   Given   A body start from rest means initial velocity = 0m/s  Nd final velocity = 10m/s  So change in velocity = final velocity -initial velocity               Δv = 10-0              Δv = 10  So acceleration  = Δv/t              a = 10/2             a = 5m/s²  So acceleration = 5m/s²  Hope it helps  :-)

Answer 2

The body has started its motion just now so the intial speed of the body will be 0. And after 2 sec it aquires velocity of 10m/s. Therefore it's final velocity is 10m/s. So you have both time and change in velocity just divide them and you will get your answer that is 5m/s*s.

A= final velocity-intial velocity/time taken
A=10-0/2
A=5m/s*s