Use the formula: Impulse = Force × Time
Write it as: J = F × Δt
If force changes over time, use: J = ∫ F dt
Use SI units: newton-second (N·s)
Equivalent unit: kilogram-meter per second (kg·m/s)
If mass and velocity are known, use: Impulse = change in momentum = m(vf – vi)
Calculate the change in velocity first if needed
Multiply the force by the time interval for constant force
Multiply the average force by the time interval if force varies
Check that the time is in seconds
Check that the force is in newtons
Ensure the result is expressed in N·s or kg·m/s