PSCP Work, Power, Energy

Front

What is work in physics?

Back

Work is done when a force causes an object to move in the direction of the force. It is calculated as Work = Force x Distance x cos(θ), where θ is the angle between the force and the direction of motion.

Front

What is the formula for calculating gravitational potential energy (GPE)?

Back

GPE = mass x gravity x height (GPE = mgh).

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 that object.

Front

What happens to the kinetic energy of an object as it falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases, conserving the total mechanical energy.

Front

What is the unit of work?

Back

The unit of work is the Joule (J).

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. If θ is 90 degrees, no work is done.

Front

What is kinetic energy?

Back

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

Front

How does height affect gravitational potential energy?

Back

Gravitational potential energy increases with height; the higher an object is, the more potential energy it has.

Front

What type of energy conversion occurs when a rock falls?

Back

The energy conversion is from potential energy to kinetic energy.

Front

What is the maximum kinetic energy point on a roller coaster?

Back

The maximum kinetic energy occurs at the lowest point of the roller coaster, where the speed is highest.