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Author Question: In a contest, two tractors pull two identical blocks of stone the same distance over identical ... (Read 458 times)

abarnes

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on: Aug 1, 2020
In a contest, two tractors pull two identical blocks of stone the same distance over identical surfaces. However, block A is moving twice as fast as block B when it crosses the finish line. Which statement is correct?

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Block A has twice as much kinetic energy as block B.

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Block B has lost twice as much kinetic energy to friction as block A.

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Block B has lost twice as much kinetic energy as block A.

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Both blocks have had equal losses of energy to friction.

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No energy is lost to friction because the ground has no displacement.
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
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Marked as best answer by abarnes on Aug 1, 2020

millet

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Reply #1 on: Aug 1, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Baby Ichan

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Reply #2 on: Jun 13, 2021
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