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Question

A man eats glucose and then he moves a block, which then comes to rest after sliding on a rough floor. The correct order of energy changes can be:


A

Chemical - Heat - Kinetic

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B

Chemical - Kinetic - Heat

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C

Heat - Kinetic - Chemical

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D

Data insufficient

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Solution

The correct option is B

Chemical - Kinetic - Heat


The man acquires chemical energy by the intake of glucose which then transformed into kinetic energy which is required to move the block. As the block slides on the rough floor, it would eventually come to rest due to friction, in which heat will be released. So the correct order of energy change: Chemical energy - Kinetic energy - Heat energy.


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