Question

Starting from rest , the acceleration of particle is a = 2(t-1) .find the velocity of the particle at t= 5 sec

Answer 1

Answer:

Hello !

acceleration = (final velocity - initial velocity) / time taken.

final velocity = x

initial velocity = 0 m/s (rest)

time = 5s.

acceleration = 2 (t-1)

                     =  2 (5-1)  = 2 *4

                     = 20 $m/s^{2}$

so,   20 = $\frac{(x-0)}{5}$

        20 *5 = x-0

        100 = x-0

       x= 100 +0

     final velocity = $100$  $m/s$