Multiple Choice
Which topic in a biology textbook is directly related to the concept of kinetic energy in physics?
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9. Work & Energy
Intro to Energy & Kinetic Energy
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How does energy transform from potential energy to kinetic energy in a system?
A
Kinetic energy is converted to potential energy when an object is at rest.
B
Potential energy remains constant while kinetic energy decreases.
C
Kinetic energy is converted to thermal energy without any change in potential energy.
D
Potential energy is converted to kinetic energy as an object accelerates due to gravity.
Verified step by step guidance1
Begin by understanding the concept of potential energy, which is the energy stored in an object due to its position or configuration. For example, an object held at a height has gravitational potential energy.
Recognize that kinetic energy is the energy of motion. When an object is moving, it possesses kinetic energy proportional to its mass and the square of its velocity.
Consider a scenario where an object is initially at rest at a height. It has maximum potential energy and zero kinetic energy.
As the object begins to fall due to gravity, its potential energy decreases while its kinetic energy increases. This is because the energy is being transformed from potential to kinetic as the object accelerates.
Understand that the total mechanical energy (sum of potential and kinetic energy) in an ideal system without external forces remains constant, illustrating the conservation of energy principle.
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