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Question

According to work-energy theorem, the work done by the net force on a particle is equal to the change in its.


A

Kinetic energy

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B

Potential energy

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C

Linear momentum

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D

Angular momentum

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E

Acceleration

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Solution

The correct option is A

Kinetic energy


Explanation for correct option:

Option A: Kinetic Energy

Work-energy theorem:

The principle of work and kinetic energy is also known as work energy theorem states that the amount of energy transferred in a body is always equal to amount of work done on it.

Mathematically express as:

w=kf-ki

Where, w=Work done, kf=Final kinetic energy, ki=Initial kinetic energy.

Therefore, the work done by the net force on a particle is equal to the change in its kinetic energy.

Explanation for incorrect option:

Work-energy theorem is valid in the presence of all types of forces such as external force, internal force and conservative force which is not well defined by.

B. Potential energy

C. Linear momentum

D. Angular momentum

E. Acceleration

Thus, Kinetic energy is the only which satisfy the all types of conditions and well defined the work energy theorem.


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