The velocity of a particle depends upon t as V = A + Bt + ct2. If velocity is in m/s, the unit of A will be

  1. m/s
  2. m/s2
  3. m.s
  4. m2/s


The magnitudes of physical quantities can be added together or subtracted from one another only if they have the same dimensions. So, the dimensions of A has to be same as the dimensions of velocity, m/s.

Correct option is A.