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Physics 95 Online
OpenStudy (anonymous):

A 1300kg - car rolling on a horizontal surface has speed of 50km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 3.1m . What is the spring stiffness? I set 1/2mv^2=1/2kx^2. Am I using the correct formula?

OpenStudy (anonymous):

yes.

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