What is Impulse Formula
Impulse of an object is equal to the product of the average and the time interval during which the force is applied. The change in momentum is equal to the impulse. It is denoted by the symbol J. It is a vector quantity, means it has both direction and magnitude as well. Its standard unit of measurement is newton seconds (Ns) and dimensional formula is given by [M1L1T-1].
Formula 1 :
J = Δp = mv – mu
where,
- J is the impulse value,
- Δp is the change in momentum of the object,
- m is mass of object,
- v is final velocity,
- u is initial velocity.
Formula 2 :
J = Δp = FΔt
where,
- J is the impulse value,
- Δp is the change in momentum of an object,
- F is the force acting on the object,
- Δt is the time interval of acting force.
How to find Impulse with force and time?
Impulse can be calculated by multiplying force with time. The formula for calculating impulse is J = FΔt where J is the impulse, F is the force applied and t is the time duration for which the force is applied. The SI unit of impulse is Newton-seconds (N·s). In this article we are going to learn what is impulse, formula for calculating impulse and some sample problem for calculating impulse.