Question

Suppose an object sliding along a frictionless, horizontal table hits a patch of friction, then slides up a frictionless hill and compresses a spring. The spring pushes the block back in the opposite direction that it came, the block then slides down the frictionless slope and hits the friction patch again. It’s speed after all this:

a. Is faster than at the start of the problem
b. Is slower than at the start of the problem
c. Is the same as at the start of the problem