SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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lifted above Earth’s surface
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in motion
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at rest
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changing direction
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Detailed explanation-1: -In physics, we know that the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Hence, An object that has kinetic energy must be in motion i.e, moving.
Detailed explanation-2: -Kinetic energy is a property of a moving object or particle and depends not only on its motion but also on its mass. The kind of motion may be translation (or motion along a path from one place to another), rotation about an axis, vibration, or any combination of motions.
Detailed explanation-3: -Since kinetic energy is based on motion, it is always a positive value. If it is not in motion, the kinetic energy of that object is zero.