Home Preparation for National Talent Search Examination (NTSE)/ Olympiad
Chapter : 2. Force & Laws Of Motion
Impulse
Impulse : 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.