Momentum and impulse

Set a mass, a speed and a stopping time to see the momentum and the average force needed to stop it.

Works in metric or imperial units.

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Questions students ask

Why do crumple zones and airbags work?

They make the collision last longer. The change in momentum is the same, so force = change in momentum ÷ time is smaller.

What formula does it use?

p = mv; force = change in momentum ÷ time (F = Δp/Δt).

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