4) Alex “Sky” Morgan, world champion pole vaulter, is trying to set a new world record....

4) Alex “Sky” Morgan, world champion pole vaulter, is trying to set a new world record. At the end of his approach run, he has a horizontal velocity of 9.09 m/s and his center of mass is 1.25 m above the ground. Show all of your work in solving the problem including the formula and appropriate units. (20 points)

a) If Alex’s mass is 60 kg, estimate how high he should be able to vault if his kinetic and potential energies at takeoff are all converted to potential energy at the peak?

b) What would the peak height be if he could increase his running speed by 20%? c) Would altering body mass affect peak height (all else being equal), and why?

Expert Solution

simply just apply the conservation of energy. please give a thumbs up.

genius_generous answered 2 years ago

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