IGCSE Energy

Every moving object has energy in this energy store

Two magnets close together have energy in this energy store.

Two negatively charged particles which are close together have energy in this energy store

A stretched rubber band has energy in this energy store

Food, fuels and batteries have energy in this energy store

A roller coaster at the top of a hill has energy in this energy store.

Energy which is transferred due to temperature difference caused electrically or by a chemical reaction.

Energy which is transferred by a force moving an object through a distance

Energy which is transferred by charges moving due to a potential difference (voltage)

Energy which is transferred as a wave, for example light.

An Olympic high jumper, with a mass of 82 kg, has a maximum gravitational potential energy of 1970 J. How high was the jump?

Let g = 9.8N/kg

How could you increase the gravitational potential energy of an object without changing its mass and gravity?

At which point does the ball has the greatest gravitational potential energy (GPE)?

What is the mass of a moving object that has 100 Joules of KE and moves at a velocity of 2 m/s?

What two factors affect an object's kinetic energy?

What does the Law of Conservation of Energy state?

A 40 kg crate is picked up by a crane to a height of 50m. The crate falls. What is the velocity of the crate just before it hits the ground?