Work And Energy Review

Front

What is gravitational potential energy (GPE)?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, calculated as GPE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What is the formula for calculating work done?

Back

Work done (W) is calculated using the formula W = Fd, where F is the force applied and d is the distance moved in the direction of the force.

Front

What is the unit of measurement for work?

Back

The unit of measurement for work is Joules (J).

Front

Can energy be created or destroyed?

Back

No, energy cannot be created or destroyed; it can only be transformed from one form to another, according to the law of conservation of energy.

Front

At which position does a child on a swing have the most gravitational potential energy?

Back

The child has the most gravitational potential energy at the highest point of the swing, which is position Z.

Front

If 500 J of work is done using a force of 50 N, how far does the object move?

Back

The object moves 10 meters.

Front

What is kinetic energy (KE)?

Back

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

Front

What is the relationship between work and energy?

Back

Work done on an object results in a change in energy; specifically, work can transfer energy to or from an object.

Front

What is the gravitational potential energy of a 1 kg book that is 1 meter above the ground?

Back

The gravitational potential energy of the book is 9.8 Joules.

Front

What is the acceleration due to gravity on Earth?

Back

The acceleration due to gravity on Earth is approximately 9.8 m/s².