Question

A particle is starting from rest moves with acceleration of a = 2t + 1, where a is in m/s2 and t is in second. the velocity of particle at t = 2 s is

Answer 1

hi friend this answer will
help you a lot in strengthening your concepts in laws of motion
u=0{starting from rest}
from Newton's first equation of motion
we know that v=u+at
since u=0
v= at
v={2t+1}t
v={2×2+1}×2 {t=2s}

v=8+2=10metre per second

Answer 2

hi friend
here's your answer looking for

according to your question if T = 2sec

then,
a= 2t+1

a = 2(2) + 1

a= 5 m/s^2

so, we get the a = 5m/s^2

if you are asking about final velocity then,

v = u + at

v = 0 + 5(2)

v= 10 m/ s

hope it's helpful to you
From brainly star Amaytripathi19