An object is dropped from a platform 100 feet high. ignoring wind resistance, what will its speed be when it reaches the ground? explain. ft/s 6400 2000 80. 44

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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 = 2.1 m below the tank bottom which is a = 7.4 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)

It is really hard for me right know