A meteoroid of mass = 595 kg has a speed of 79.0 m/s when 800 km above the Earth. It is falling vertically (ignore air resistance) and strikes a bed of sand in which it is brought to rest in 3.61 m.
(a) How much work does the force of gravity do on the meteoroid
on the way to the surface?
???? GJ
(b) What is the speed of the meteoroid just before striking the
sand?
???? m/s
(c) How much work does the force of gravity do on the meteoroid
after it hits the surface?
???? GJ
(d) How much work does the sand do to stop the meteoroid?
???? GJ
(e) What is the average force exerted by the sand on the
meteor?
???? GN
(f) How much thermal energy is produced?
???? GJ
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Homework Answers
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