In a little league baseball game, the 145 g ball enters the strike zone with a speed of 17.0 m/s . the batter hits the ball, and it leaves his bat with a speed of 25.0 m/s in exactly the opposite direction. what is the magnitude of the impulse delivered by the bat to the ball? if the bat is in contact with the ball for 1.0 ms , what is the magnitude of the average force exerted by the bat on the ball?

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.