a14) As the time needed to run up a flight of stairs deceases, the amount of workdone by gravity;a) Increases b) decreasesesc ← →#$AD2° 3″ 4³¹ 5*tabQWc) remains constantshiftZXalt ||||DII6^&DOeUSSDFGHJKLV8 * 90ROYULOPE✓0Nov 162:25 +bickPi?etirt

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Description: a14) As the time needed to run up a flight of stairs deceases, the amount of workdone by gravity;a) Increases b) decreasesesc ← →#$AD2° 3″ 4³¹ 5*tabQWc) remains constantshiftZXalt ||||DII6^&DOeUSSDFGHJKLV8 * 90ROYULOPE✓0Nov 162:25 +bickPi?etirt

Given : As the time needed to run up a flight of stairs decreases, Find:- The amount of work done…

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Physics

14) As the time needed to run up a flight of stairs deceases, the amount of work done by gravity; a) Increases b) decreases c) remains constant

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Energy Of A System

Section: Chapter Questions

Problem 3P: In 1990, Walter Arfeuille of Belgium lifted a 281.5-kg object through a distance of 17.1 cm using...

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A student has the idea that the total work done on an object is equal to its final kinetic energy. Is this idea true always, sometimes, or never? Ii it is sometimes true, under what circumstances? If it is always or never true, explain why.
A roller-coaster car of mass 1.50 103 kg is initially at the top of a rise at point . It then moves 35.0 m at an angle of 50.0 below the horizontal to a lower point . (a) Find both the potential energy of the system when the car is at points and and the change in potential energy as the car moves from point to point , assuming y = 0 at point . (b) Repeat part (a), this time choosing y = 0 at point , which is another 15.0 m down the same slope from point .
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In 1990, Walter Arfeuille of Belgium lifted a 281.5-kg object through a distance of 17.1 cm using only his teeth. (a) How much work was done on the object by Arfeuille in this lift, assuming the object was lifted at constant speed? (b) What total force was exerted on Arfeuilles teeth during the lift?
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In 1990 Walter Arfeuille of Belgium lifted a 281.5-kg object through a distance of 17.1 cm using only his teeth. (a) How much work did Arfeuille do on the object? (b) What magnitude force did he exert on the object during the lift, assuming the force was constant?