Question

Acceleration.
of a particle starting
from rest is a = (5t) m
it's velocity
then
at t= 2 is​

Answer 1

Answer:

Correct option is

A

15m/s

correct answer is A.

a=2(t−1)

=2t−2

dt

dv

=2t−2

dv=(2t−2)dt

integrating both side we get,

∫dv=∫(2t−2)dt

v=t

2

−2t+c

=(5)

2

−2×5

=25−10

=15m/s