A 0.228 kg puck, initially at rest on a horizontal, frictionless surface, is struck by a 0.228 kg puck moving initially along the x axis with a speed of 2.27 m/s. After the collision, the 0.228 kg puck has a speed of 1.27 m/s at an angle of 31◦ to the positive x axis. Determine the magnitude of the velocity of the 0.228 kg puck after the collision. Answer in units of m/s.

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

Anybody wanna ? (picture included? )

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)