Recent content by stefisc

i know the equations: ME=KE+PE KE= 1/2 mv^2 PE= mgh my problem is that i don't know how to use them and i need someone to explain it to me.

A 48.0 kg block slides along the frictionless surface of a hill that is 188 m high with an initial speed 19.0 m/s. Relative to the bottom of the hill, (Note that the acceleration is not constant so you can not use freefall equations to solve the following problems.) What is the block's...