Question

The position of a particle moving on a straight line is given by x = (3t2 – 2t) m. Displacement covered by particle in time 1 s to 3 s is _____m.

Answer 1

Answer:

x = 3t^2 -2 t m

Position  at t= 1 s is = 3*1^2 -2*1 = 3-2 = 1 m

Position at t= 3s is = 3*3^2 -2 *3 = 27 - 6 = 23 m

So,

Displacement covered by particle in time 1 s to 3 s is =  (23-1 )

               = 22 m