Question

If a body is moving with a velocity 36 kmph after 4s it’s velocity is 72 kmph then find displacement of a body during this 4s.

Answer 1

Ans 60m

Explanation:

i assume constant acceleration

72 kmph =20m/s

18 kmph= 10m/s

a = v-u/t=20-10/4=5/2=2.5m/s^2

using v^2-u^2=2as

400-100=5s

s=60