When arrow is released form its bow, its energy is transformed from _____________________?
Correct answer: B. elastic P.E to K.E
- A. heat energy to K.E
- B. elastic P.E to K.E
- C. elemical energy to elastic P.E
- D. K.E to elastic P.E.
Explanation
The stretched bow stores elastic potential energy, which changes mainly into the arrow's kinetic energy when the string is released. The likely wrong choice is d, K.E to elastic P.E, because it describes the reverse process of drawing and stretching the bow.
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About Potential Energy
Potential energy is energy stored because of position or configuration, including gravitational potential energy near Earth's surface and elastic energy in a stretched or compressed spring. Questions use changes in potential energy and conservation of mechanical energy, while distinguishing a chosen reference level from an absolute zero of energy.
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