Displacement is a vector quantity, it means its value can be positive, negative or zero.

As distance is the actual path covered, while displacement is the shortest path between initial and final position. So, Distance ≥ Displacement

Momentum, p = mv = 4 x 4 = 16 kg-m/s

We know that, Momentum = mass X velocity P = mv = kg-m/s Or = kg-ms⁻₁ So, SI unit of momentum is kg-m/s.

Balanced forces cause a change in shape of object without change in its state of motion.