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    Impulse concepts

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    Discuss the following in terms of impulse and momentum:

    Why are padded dashboards safer in cars?

    Why are nylon ropes, which stretch under stress, favored by mountainclimbers?

    Why is it preferrred that railroad cars be loosely coupled with slack between cars?

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    Solution Preview

    1.Padded dashboards make cars safer. This is because, if you are in an accident your car will come to an abrupt halt. If you are not wearing your seat belt, you will come to a stop when you hit the dashboard. Your momentum will change from mv to 0. This means that the dashboard exerted an impulse on you of -mv. Since impulse = Ft, a ...

    Solution Summary

    This solution is provided in 248 words and discusses how force comes into play regarding momentum and impulse.