A roller coaster starts from rest at its highest point and then descends on its (frictionless) track.

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A roller coaster starts from rest at its highest point and then descends on its (frictionless) track. Its speed is \(30 \mathrm{~m} / \mathrm{s}\) when it reaches ground level. What was its speed when its height was half that of its starting point?

A. \(11 \mathrm{~m} / \mathrm{s}\)

B. \(15 \mathrm{~m} / \mathrm{s}\)

C. \(21 \mathrm{~m} / \mathrm{s}\)

D. \(25 \mathrm{~m} / \mathrm{s}\)

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College Physics A Strategic Approach

ISBN: 9780321907240

3rd Edition

Authors: Randall D. Knight, Brian Jones, Stuart Field

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Question Posted: Mar 29, 2024 11:00 PM

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A roller coaster starts from rest at its highest point and then descends on its (frictionless) track.

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College Physics A Strategic Approach

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