Impulse

J = F Δ t = Δ p

Impulse equals change in momentum.

Variables

J

Impulse

Change in momentum

N·s

F

Average force

Force during collision

N

Δt

Time interval

Duration of force

s

Δp

Change in momentum

Final - initial momentum

kg·m/s

Derivation

From F = dp/dt, integrate: J = ∫F dt = Δp.

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