Question

4. Starting from rest, acceleration of a
particle is a=2(t-1). The velocity of the
particle at t=5s is
1. 15m/sec
2.25 m/sec
3. 5m/sec
4. None of these​

Answer 1

Answer:

none of these is the correct answer

Answer 2

Answer:

15ans.

dv/dt=2(t-1) = v=t^2-2t=15