The momentum of an object is calculated as the product of its mass and velocity. Therefore, we can determine the momentum of the body before and after the force acts on it.
Before the force is applied: Mass of the body, m = 10 kg Initial velocity, u = 10 m/s
Momentum before the force, P1 = mass × velocity P1 = m × u P1 = 10 kg × 10 m/s P1 = 100 kg·m/s
After the force is applied: Final velocity, v = 2 m/s
Momentum after the force, P2 = mass × velocity P2 = m × v P2 = 10 kg × 2 m/s P2 = 20 kg·m/s
Therefore, the momentum of the body before the force is applied is 100 kg·m/s, and after the force is applied, it is 20 kg·m/s.