An engineer at NASA is investigating the impact of meteorites on planets. He performs experiments in a vacuum by dropping metal spheres of different sizes and different heights above a horizontal bed of sand. In one experiment, a metal sphere of mass 0-1 kg is dropped from a height of 1-2 m. The sphere makes a depression in the sand of 2 cm. gravitational field strength, g = 10 Nkg-! i) Calculate the potential energy of the sphere at a height of 1-2 m.
An engineer at NASA is investigating the impact of meteorites on planets. He performs experiments in a vacuum by dropping metal spheres of different sizes and different heights above a horizontal bed of sand. In one experiment, a metal sphere of mass 0-1 kg is dropped from a height of 1-2 m. The sphere makes a depression in the sand of 2 cm. gravitational field strength, g = 10 Nkg-! i) Calculate the potential energy of the sphere at a height of 1-2 m.
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I need help with number two part (i), (ii) and (iii)
Transcribed Image Text:2.
An engineer at NASA is investigating the impact of meteorites on planets.
He performs experiments in a vacuum by dropping metal spheres of different
sizes and different heights above a horizontal bed of sand. In one experiment, a
metal sphere of mass 0-1 kg is dropped from a height of 1-2 m. The sphere makes :
depression in the sand of 2 cm.
gravitational field strength, g = 10 Nkg"'
i) Calculate the potential energy of the sphere at a height of 1-2 m.
ii) Calculate the velocity of the sphere just before hitting the surface of the sand.
iii) Calculate the average retarding force acting on the sphere as it comes to rest in
the sand.
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