posted by Force and Momentum .
A 59 kg pole-vaulter falls from rest from a height of 5.5 m onto a foam rubber pad. The pole-vaulter comes to rest 0.39 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
a. mgh=1/2 mv^2 or v= sqrt2gh
b. force*time= mass*v
solve for force.