A2.7-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. the far end of the spring is attached to a wall, as shown. the initial height of the block is 0.54 m above the lowest part of the slide and the spring constant is 453 n/m.

(a) what is the block's speed when it is at a height of 0.25 m above the base of the slide?

(b) how far is the spring compressed?

(c) the spring sends the block back to the left. how high does the block rise?