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the one that does not involve chemical energy would be : C. Coasting downhill on a bike
This one requires physical energy, To be categorized as chemical energy, the bond of chemical compounds has to be released

Hope this helps

Answer:

Coasting downhill on a bike

Explanation:

The example that involves chemical energy are working muscles using food and burning a candle. In both of these processes many biochemical processes are involved i.e. mobilization of energy from glucose stores etc.

Coasting downhill on a bike does not involve any chemical energy. There exists an energy change i.e. potential energy is converting to kinetic energy.

Hence, the correct option is (c) "coasting downhill on a bike".

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