A 52.2 kg pole-vaulter fallsfrom rest from a height of 4.8 m onto a foam-rubber pad. Thepole-vaulter comes to rest 0.36 s after landing on the pad.
(a) Calculate the athlete's velocity just before reaching thepad.
m/sdownward
(b) Calculate the constant force exerted on the pole-vaulter due tothe collision.
Nupward