A(n) 1.7 kg skateboard is coasting along the pavement at a speed of 2.33 m/s when a(n) 0.915kg cat drops from a tree vertically downward onto the skateboard. what is the speed of the skateboard-cat combination? answer in units of m/s.

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.