Energy & Work

Front

What is the formula for work done?

Back

Work done = F × d, where F is the force applied and d is the distance moved in the direction of the force.

Front

What is the S.I. unit of work?

Back

The S.I. unit of work is Joule.

Front

What is the formula for potential energy (P.E.)?

Back

Potential energy (P.E.) = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

What other physical quantity has the same unit as work?

Back

Energy also has the same unit as work, which is Joule.

Front

Is energy a vector or scalar quantity?

Back

Energy is a scalar quantity.

Front

What is the relationship between work and energy?

Back

Work done on an object results in a change in energy of that object.

Front

What is kinetic energy?

Back

Front

What is the formula for calculating power?

Back

Front

What is the unit of power?

Back

The unit of power is Watt (W), which is equivalent to one Joule per second.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.