Phys-Presentation 4.1 Classifying Work and Energy

Front

What is the definition of 'work' in physics?

Back

Work is defined as the force applied to an object times the distance the object moves in the direction of the force.

Front

What is the formula for calculating work?

Back

Work (W) = Force (F) × Displacement (d) × cos(θ), where θ is the angle between the force and displacement.

Front

What does kinetic energy (KE) represent?

Back

Kinetic energy represents the energy of an object due to its motion.

Front

What is potential energy (PE)?

Back

Potential energy is the energy stored in an object due to its position or configuration.

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.

Front

What is the relationship between work and energy?

Back

Work done on an object results in a change in its energy.

Front

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

Back

The unit of work is the Joule (J).

Front

How does the angle between force and displacement affect work done?

Back

The work done is maximized when the force is applied in the same direction as the displacement (θ = 0°) and is zero when the force is perpendicular to the displacement (θ = 90°).

Front

What is the formula for calculating kinetic energy?

Back

Kinetic Energy (KE) = 1/2 × mass (m) × velocity (v)².

Front

What is the formula for calculating potential energy?

Back

Potential Energy (PE) = mass (m) × gravitational acceleration (g) × height (h).