1. The problem statement, all variables and given/known data A 77 kg pole-vaulter falls from rest from a height of 4.8 m onto a foam-rubber pad. The pole-vaulter comes to rest 0.24 s after landing on the pad. a)Calculate the athlete's velocity just before reaching the pad. b)Calculate the constant force exerted on the pole-vaulter due to the collision. 2. Relevant equations F=p/t 3. The attempt at a solution for part a i did Vf=Ft/m and 755.4(0.24)/77 and got 2.35 m/s downward for b i did F=p/t and (77)(2.35)/0.24 and got 754 N upward. I think i calcuated the force for part a wrong and that 's why my answer was wrong.