A 2- A ball vertically upward from the top of a building 30 m above the ground with initial velocity is equal 30 m/s . what is the velocity when the ball is at 15 m above the ground . ​

A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.