c8_Conservation of Energy & Total Mechanical Energy

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What happens to potential energy as an object falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases.

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 = mass × gravity × height.

Front

How do you calculate total mechanical energy (TME)?

Back

Total mechanical energy is the sum of potential energy (PE) and kinetic energy (KE): TME = PE + KE.

Front

What is kinetic energy (KE)?

Back

Kinetic energy is the energy of an object in motion, calculated as KE = 1/2 × mass × velocity².

Front

What form of energy does a compressed spring have?

Back

A compressed spring has potential energy.

Front

At which point on a roller coaster is gravitational potential energy at its maximum?

Back

Gravitational potential energy is at its maximum at the highest point of the roller coaster.

Front

What happens to kinetic energy as an object comes to a stop?

Back

As an object comes to a stop, its kinetic energy decreases to zero.

Front

What is the relationship between potential energy and height?

Back

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

Front

If a skydiver has a mass of 80 kg and is at a height of 900 m, what is her gravitational potential energy?

Back

Her gravitational potential energy is 705,600 J.