Recent content by Dirst

Thank you both. On to my next problem... :(

According to that, H = 3600 J / ((9.8 m/s^2)*(50.0 kg)) H = 7.35 m Is Pb = 0 because the height would equal 0 m?

Well at the top: KE = 1/2*(50.0)*(0) KE = 0 N PE = (50.0)*(9.8)*H <-- Need to find this... So I guess I can't do PE. Bottom: KE = 1/2*(50.0)*(12.0^2) KE = 3600 N Again, you can't do PE because you don't know H...

Homework Statement A child and sled with a combined mass of 50.0 kg slide down a frictionless hill. If the sled starts from rest and has a speed of 12.0 m/s at the bottom, what is the height of the hill? Homework Equations KE = 1/2 m v^2 PE = mgh The Attempt at a Solution KE = 1/2...