You are pulling your sister on a sled to the top of a 15 meter high, frictionless hill with a 10 degree incline. Your sister and the sled have a total mass of 50 kilogram. You pull the sled, starting from rest, with a constant force of 127 Newton at an angle of 45.0Â degree to the hill. If you pull from the bottom to the top, obtain the speed of the sled be when you reach the top?