Explanation According to Newton’s law, acceleration is proportional to force and inversely proportional to mass. F = m a . Given: The force of gravity is twice as great on a 2 kg rock as on a 1kg rock The force is doubled, and the mass is doubled, but the acceleration is, therefore, the same (e.g. gravity). F = m a a = F / m ........................ ( 1 ) When force is doubled, and mass also doubled, then acceleration

7th Edition

ISBN: 9780321625922

Author: Douglas C. Giancoli

Publisher: Addison-Wesley

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!

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Chapter 4, Problem 10Q

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Why heavier rock doesn’t fall first if the force of gravity is twice as great on a 2 kg rock as on a 1kg rock

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Chapter 4, Problem 9Q

Chapter 4, Problem 11Q

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