# When a ball of mass m is dropped from rest from a height h, its kinetic energy just before landing is K. Now, suppose a second ball of mass 4m is dropped from rest from a height h/4. (a) Just

When a ball of mass m is dropped from rest from a height h, its kinetic energy just before landing is K. Now, suppose a second ball of mass 4m is dropped from rest from a height h/4.

(a) Just before ball 2 lands, is its kinetic energy 4K, 2K, K, K/2, or K/4?

(b) Choose the best explanation from among the following:

I. The two balls have the same initial energy.

II. The more massive ball will have the greater kinetic energy.

III. The reduced drop height results in a reduced kinetic energy.

(a) Just before ball 2 lands, is its kinetic energy 4K, 2K, K, K/2, or K/4?

(b) Choose the best explanation from among the following:

I. The two balls have the same initial energy.

II. The more massive ball will have the greater kinetic energy.

III. The reduced drop height results in a reduced kinetic energy.

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## Apply the concept of conservation of energy to answer the conceptual question a T…View the full answer

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Chapter #

**8**- Potential Energy and Conservation of EnergySection: Section 8.1

Problem: 19

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