Use the formula: Impulse = Force × Time
Write it as: J = FΔt
If force changes over time, calculate: J = ∫F dt
Use the area under a force-time graph to find impulse
Use units of newton-seconds (N·s)
Use units of kilogram-meter per second (kg·m/s) for the same quantity
If mass and velocity are known, use: J = m(vf − vi)
Find the change in momentum to calculate impulse
Multiply the average force by the time interval if force is not constant