If the displacement of an object is proportional to square of time

If the displacement of an object is proportional to square of time, then the object moves with

  1. uniform velocity
  2. uniform acceleration
  3. increasing acceleration
  4. decreasing acceleration

Answer

From the second equation of motion,

s = ut + ½at2

If the object starts from rest,  initial velocity, u = 0. So,

s =  ½at2

s ∝ t2 , if a = constant

So, the object moves with constant or uniform acceleration.

The correct option is B.