Question

A small body is dropped from rest. After what time will it have a velocity of 48 m s-1 ?

Answer 1

Given,

Initial velocity=0

Final velocity=48m/s

To find,

Time taken to have velocity 48m/s

Solution,

we can simply solve this problem by using the following process

initially body is at rest so,

initial velocity(u)=0

Final velocity(v)=48m/s

time taken(t)=?

we know,

v=u+gt

48=0+10×t

t=48/10

t=4.8s

So after 4.8s the body have a velocity of 48m/s.