Question

V=u+at any example for class 9

Answer 1

A body is at rest i.e. u=0 falls at acceleration i.e. a=9.8m/s^2 in time i.e. t=5 Second
So final velocity is v = 0+ 9.8× 5
v= 49m/s

Answer 2

Hello friend
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v = u + at

This is the relation between velocity and time.

Take an example.......

✡ The speed of an object at Constant rate is 2m/s in 3 second with an acceleration 4 m/s^2. Then find the final velocity of object.

Given:

u = 2m/s

a = 4 m/s^2

t = 3 s

By using the formula

v = u + at

v = 2 +4*3

v = 2+12

v = 14 m/s.

Therefore the final velocity is 14m/s.

I hope this will helps you......