Recent content by to143

sig figs issues :cry: Thank you!

\[ {\text{Got it }}v_f = \sqrt {2gh} \]

O.K. So this is what I have done so far: First we calculate the final velocity of the vaulter using kinematics: \[ \begin{gathered} \Delta x = v_i \Delta t - \frac{1} {2}g\Delta t^2 {\text{ when }}v_i = 0{\text{ we've got }} \hfill \\ \Delta x = - \frac{1} {2}g\Delta t^2...

A 55kg pole-vaulter falls from rest from a height of 5.0m onto a foam-rubber pad. The pole-vaulter comes to rest 0.3s after landing on the pad. a) Calculate the athletes's velocity just before reaching the pad. b) Calculate the constant force exerted on the pole-vaulter...