Question

If a car starts from rest has an acceleration that increases linearly with time as a = 2t here t is in second then the average velocity for first 3 seconds

Answer 1

Answer:

it answer in www.learncbse.in all subjects answers

Answer 2

Answer:

9 m/s

Explanation:

since a=2t

implies ( dV/ dt ) = 2t

dV = 2t dt

on integrating we get

V = t^2 + c

on applying limits from 0 - 3

V = 3^2 - 0^2

= 9