Problem: Consider the two spheres shown here , one made of silver and the other of aluminum. The spheres are dropped from a height of 2.1 m.What is the velocity of the aluminum sphere at the moment it hits the ground? (Assume that energy is conserved during the fall and that 100% of the sphere’s initial potential energy is converted to kinetic energy by the time impact occurs.)

FREE Expert Solution

Potential energy:

PE=mgh

Kinetic energy:

KE=12mv2


For aluminum:

energy is conserved during the fall and that 100% of the sphere’s initial potential energy is converted to kinetic energy

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Problem Details

Consider the two spheres shown here , one made of silver and the other of aluminum. The spheres are dropped from a height of 2.1 m.

Aluminum sphere: Composition = aluminum; Density = 2.70 grams per cubic centimeter; Volume = 196 cubic centimeters. Silver sphere: Composition= silver; Density = 10.49 grams per cubic centimeter; Volume = 196 cubic centimeters.


What is the velocity of the aluminum sphere at the moment it hits the ground? (Assume that energy is conserved during the fall and that 100% of the sphere’s initial potential energy is converted to kinetic energy by the time impact occurs.)

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