Suppose a box of mass m slides toward a spring with a speed of vi, presses 1.00 m into the spring, and then bounces away with a final speed of 15.0 m/s . Find the initial speed of the box. Take into account the work due to friction (k = 0.5). Express your answer with the appropriate units.

 

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Applying conservation of energy principles we can equate the initial kinetic energy with the sum ... View the full answer