Frequency describes the number of waves that pass a fixed place in a given amount of time. usually frequency is measured in the hertz unit, named in honor of the 19th-century german physicist heinrich rudolf hertz. the hertz measurement, abbreviated hz, is the number of waves that pass by per second.
Give an example in each case where: (a) force causes a motion in stationary object.(6) force stops a moving body.(c) force changes the direction of a moving body.(d) force changes the speed of a moving body.(e) force changes the shape of a moving body.