The force F is given by expression F = Acos(Bx) + Csin(Dt), where x is the displacement and t is the time. Then dimensions of are the same as that of:
Assertion: In an elastic collision between two bodies, the energy of each body is conserved.
Reason: The total energy of an isolated system is conserved.
Assertion: A body can be at rest even when it is under the action of any number of external forces.
Reason: Vector sum of all the external forces is zero.
Assertion: In a non-uniform circular motion, the acceleration of the particle is equal to sum of the tangential acceleration and the centripetal acceleration.
Reason: The two acceleration are perpendicular to each other.
Assertion: A body can have acceleration even if its velocity is zero at that instant of time.
Reason: The body will be momentarily at rest when it reverses its direction of motion.