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Physics 14 Online
OpenStudy (anonymous):

How large an average force is required to stop a 1400-kg car in 5.0 s if the car’s initial speed is 25 m/s?

OpenStudy (anonymous):

Impulse is equal to the change in momentum: \[\begin{align*} F \Delta t &= m \Delta v \\ F (5.0~\text{s}) &= (1\;400~\text{kg})(25~\text{m/s}) \end{align*}\]

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