Question

if a body start from rest and then moves with a speed of 10m/s.find acceleration of
car in 2sec?​

Answer 1

Initial velocity, u = 0 m/s ( since the body is at rest )

Final velocity, v = 10 m/s

Time taken, t = 2 s

By, Newton's first law of motion:

==> v = u + at

==> 10 = 0 + 2a

==> 2a = 10

==> a = 5 m/s²

Hence, The acceleration of the body is 5m/s²

Answer 2

As the body starts from rest

u=0

v=10m/s

t=2sec

As per the formula

$v = u + at \\ v = at \\ a = \frac{v}{t} \\ a = \frac{10}{2} \\ a = 5 \frac{m}{ {s}^{2} }$

I hope this helps ( ╹▽╹ )