A body is initially moving with a velocity of 20 m/s. It undergoes an acceleration of 3 m/s² for 6 seconds. Find the displacement (in m ) of this body in these 6 seconds.

Given that:

Initial velocity u =20 m/s

Acceleration a = 3 m/s²

Time t = 6 sec

Using the equation, s = ut + ½ at²

Displacement s = 20 x 6 + 1/2 x 3 x 6²

                             = 174 m