2. Force & Laws Of Motion
If a force F is applied on a body of mass m for a time interval Δt and if the change in velocity is Δv then
∴ Impulse = F dt = m Δv
Impulse = change in momentum
Unit of impulse is newton × second.
Examples of Impulse
Example. While catching a cricket ball a player moves his hands backwards. Cricket ball coming towards fielder has a large momentum. By doing so he increases the time interval to reduce the momentum of the ball. Rate of change of momentum becomes slow.