What are the definitions of momentum, angular momentum, and kinetic energy for a single particle? What are the dimensions of these quantities?

Explanation:

Momentum is defined as a physical quantity that takes into cognisance the product of mass of a body and its velocity. It's unit is kgm/s

Momentum = mv

Angular Momentum is defined as the quantity of rotation of a body that measures the product of its moment of inertia with respect to its angular velocity. Because it deals with rotation is what differs it from ordinary momentum. It's unit is kgm²/s

Angular Momentum = mvr

Kinetic Energy is defined as the energy a body posses as a result of it being in motion. The unit of Kinetic Energy is J

Kinetic Energy = ½mv²

The dimensions of these quantities are

Momentum => MLT^−1

Angular Momentum => ML²T^−1

Kinetic Energy => ML²T^-2

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