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.

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Related Book For  answer-question

Physics

ISBN: 978-0321976444

5th edition

Authors: James S. Walker

Question Details
Chapter # 8- Potential Energy and Conservation of Energy
Section: Section 8.1
Problem: 19
Posted Date: August 31, 2017 11:19:37