A 70g rubber ball is thrown with a speed of 10 m/s at a floating 8g balloon. If the balloon is knocked forwards at 40 m/s, how fast is the ball moving after the collision? (Round to the nearest tenths place)

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.