Pls i need help ill give u 100 points for it but dont play around just pls help me ill even give u Brainiest if u get it right A child and sled with a combined mass of 61.6 kg slide down a friction less hill that is 3.8 m high. If the sled starts from rest, how much kinetic energy will they have at the bottom of the hill?

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.