a golf ball of mass 0.03 kg initially at rest is struck by a golf club and given a speed of 50m/s along the horizontal. if the club and the ball were in contact for 0.002is, what average force is acted on the ball? show whether or not gravity should be accounted for

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

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)

Aplane flying horizontally at an altitude of 1 mile and a speed of of 500mih passes directly over a radar station. find the rate at which the distance from the plane to the station is increasing when it is 2mi away from the station.