The total height of Yosemite Falls is 2425 ft . part A How many more joules of g

Question

The total height of Yosemite Falls is 2425 ft .

part A

How many more joules of gravitational potential energy are there for each kilogram of water at the top of this waterfall compared with each kilogram of water at the foot of the falls?

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Part B

Find the kinetic energy and speed of each kilogram of water as it reaches the base of the waterfall, assuming that there are no losses due to friction with the air or rocks and that the mass of water had negligible vertical speed at the top.

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Part C

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Part D

How fast (in m/s and mph) would a 77.0 kg person have to run to have that much kinetic energy?

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Part E

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Part F

How high would Yosemite Falls have to be so that each kilogram of water at the base had twice the kinetic energy you found in part B?

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Part G

How high would Yosemite Falls have to be so that each kilogram of water at the base had twice the speed you found in part C?

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You throw a 22.0 N rock into the air from ground level and observe that, when it is 15.0 m high, it is traveling upward at 17.0 m/s

art A

Use the work-energy principle to find the rock's speed just as it left the ground.

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Part B

Use the work-energy principle to find the maximum height the rock will reach.

Explanation / Answer

there are multiple questions...so i will solving some of them

739.15 meters=2425 ft

question 1

part a )
PE = mgh
g is the acceleration of gravity 9.8 m/s

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