Question

expalin work and energy from class 9​

Answer 1

Explanation:

The work-energy principle states that an increase in the kinetic energy of a rigid body is caused by an equal amount of positive work done on the body by the resultant force acting on that body. Conversely, a decrease in kinetic energy is caused by an equal amount of negative work done by the resultant force.

SI unit: joule (J)

In SI base units: 1 kg⋅m2⋅s−2

Answer 2

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Work and energy are defined in a "circular" manner meaning they are each defined based on the other.

Work-

• Change in the energy of the object and the system.

• Act of transferring energy.

Energy-

• A measure of a change in a condition of matter. • Energy is transferred by doing work on a system.

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