Work and KE

Front

What is the formula for calculating work done by a force?

Back

Work = Force x Distance x cos(θ), where θ is the angle between the force and the direction of motion.

Front

What is the unit of work in the International System of Units (SI)?

Back

Joule (J)

Front

What is kinetic energy (KE)?

Back

The energy an object possesses due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

What is potential energy (PE)?

Back

The energy stored in an object due to its position or configuration, commonly gravitational potential energy, calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

How is the work-energy principle defined?

Back

The work done on an object is equal to the change in its kinetic energy.

Front

What happens to the work done if the distance is zero?

Back

If the distance is zero, the work done is zero, regardless of the force applied.

Front

What is the relationship between work and energy?

Back

Work is a transfer of energy; when work is done on an object, energy is transferred to or from that object.

Front

In which scenario is no work done, even if a force is applied?

Back

When a force is applied but there is no movement in the direction of the force, such as holding a heavy object stationary.

Front

What is the significance of the angle in the work formula?

Back

The angle determines how much of the force contributes to the work done; only the component of the force in the direction of motion does work.

Front

What is the total mechanical energy of an object?

Back

The sum of its kinetic energy (KE) and potential energy (PE), expressed as Total Mechanical Energy = KE + PE.