Question

a body dropped from top of a hill reaches bottom of Hill in 2 seconds find the velocity of body?(s=10m/s^2)​

Answer 1

Concept :-

When a body drops from certain height then it's initial Velocity becomes zero and it has final Velocity only.

Given :-

Time = t = 2 s

Acceleration due to gravity = g = 10 ms-²

Let the final velocity of body = v

Using first equation of Motion.

v = u + gt

v = 0 + 10 × 2

v = 20 ms-¹

Hence,

The velocity of body = v = 20 ms-¹