how much force will a tennis racket need to exert on a tennis ball, with a mass of 0.67 kg, to make it
accelerate at a rate of 5,600 m/s2? (f=ma)
a 1600 n
b 2200 n
c 3100 n
d 3800 n

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.