Physics Energy Review

Front

What is Mechanical Energy (ME)?

Back

Mechanical Energy is the sum of potential energy (PE) and kinetic energy (KE) in a system.

Front

What is Potential Energy (PE)?

Back

Potential Energy is the energy stored in an object due to its position or configuration, commonly associated with gravitational energy.

Front

What is the formula for calculating Work?

Back

Work (W) is calculated using the formula W = Force (F) x Distance (d) x cos(θ), where θ is the angle between the force and the direction of motion.

Front

What unit is energy measured in?

Back

Energy is measured in Joules (J).

Front

How do you calculate Gravitational Potential Energy?

Back

Gravitational Potential Energy (PE) is calculated using the formula PE = mass (m) x gravity (g) x height (h).

Front

What is Kinetic Energy (KE)?

Back

Kinetic Energy is the energy of an object due to its motion, calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

If a force of 40N is applied over a distance of 50m, how much work is done?

Back

Work done is 2000 Joules.

Front

Where is gravitational potential energy highest in a system?

Back

Gravitational potential energy is highest at the highest point in the system.

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 the significance of the angle in the work formula?

Back

The angle θ in the work formula determines how much of the force contributes to the work done in the direction of motion.