Final answer:
The SI unit for kinetic energy is the Joule, while the calorie is commonly used in health and food contexts. Understanding units like the kilojoule is important for energy measurement and quantification.
Explanation:
The SI unit of kinetic energy is Joule (J), which is equivalent to 1 kg m²/s². It is defined as the energy exerted by a force of one Newton acting to move an object through a distance of one meter.
In the context of health and food energy content, calorie is commonly used. A calorie (cal) is the quantity of heat required to raise the temperature of 1 gram of water by 1°C.
Other units of energy include the kilojoule (kJ), where 1 kJ = 1000 Joules. It is essential to understand these units when measuring and quantifying energy in different scenarios.
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