Homework Help: physics

Posted by zeke on Tuesday, January 8, 2008 at 9:27pm.

A 1200-kg car rolling on a horizontal surface has a speed v= 65km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.2 m. What is the spring stiffness constant of the spring?

physics - bobpursley, Wednesday, January 9, 2008 at 8:53am
KEcar=PEspring
1/2 m v^2= 1/2 k x^2
solve for k.

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