Question

A particle starts from rest and moves 400m with acceleration 2m/s square. find out the time taken by it​

Answer 1

Answer:

Greetings!

As we know the first equation of motion being (S=u*t+1/2a$t^{2}$)

As the body is starting from rest ,its initial velocity is =0.

so we get

S=1/2 at^2

400=1/2*2 t^2

400 = t^2

t=20 seconds.

ANSWER=20 SECONDS

Answer 2

Explanation:

ans is 20 second

hope it is helpful