The pole vaulter runs 100m as fast as he can in 10 seconds. This gives him a velocity of 10m/s. The pole vaulter weighs 70kg. The bar is 5 m high. The pole vaulter jumps at an angle of 74 degrees. How much work did the pole vaulter do? How much power? w= fdcosΘ

Question

anonymous · Answer

On the way up W = m g h
Got it back on the way down.

faf3 · Answer

thats the formula for energy not work.

anonymous · Answer

energy = work  here

if you lift m to height h it gains potential energy of mgh and you do work of mgh

anonymous · Answer

42

anonymous · Answer

The power will be work per time.