A 65 kilogram pole vault to a height of 5.5 meters. Calculate the minimum amount

Question

A 65 kilogram pole vault to a height of 5.5 meters. Calculate the minimum amount of kinetic energy thevaulter needs to reach this height if air friction is neglected andall the vaulting energy is derived from kinetic energy. Calculate the speed the vaulter must attain to have thenecessary kinetic energy. A 65 kilogram pole vault to a height of 5.5 meters. Calculate the minimum amount of kinetic energy thevaulter needs to reach this height if air friction is neglected andall the vaulting energy is derived from kinetic energy. Calculate the speed the vaulter must attain to have thenecessary kinetic energy.

Explanation / Answer

you should assume that the gravitational potential energy at thetop is equal to the kinetic energy at the bottom: PE=KE m*g*h=.5*m*v2 65*9.8*5.5=3500J of KE. 3500=.5*65*v2v=10.4 m/s

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