Question

A body is moving with uniform acceleration and at a certain instant of time it's velocity is 10 m/s After 5 seconds ,the velocity becomes 20 m/s then it's velocity 3 seconds earlier is ...........

A )3m/s
B )4m/s
C )8m/s
D )6m/s​

Answer 1

Answer:

Given, u = 10m/s a = 2m/s^2 t = 4sec Acceleration, a = v - ut 2 = v - 104 v = 10 + 8 = 18m/s The correct option is D. .