Work, Potential Energy and Kinetic Energy

Question 1

what is work?

Answer 1

Work is when a force moves an object through a distance, energy is transferred and work is done

Question 2

how do you calculate work done?

Answer 2

Force times distance

Question 3

what is gravitational potential energy?

Answer 3

Gravitational potential energy is the energy that an object has by virtue of it’s vertical position in a gravitational field. When an object is raised vertically, work is done against the force of gravity and the object gains gravitational potential energy

Question 4

what is the GFS on earth?

Answer 4

10 N/Kg

Question 5

how much is one newton?

Answer 5

1 kg

Question 6

what is kinetic energy?

Answer 6

Kinetic energy is energy in anything moving

Question 7

what affects kinetic energy?

Answer 7

Kinetic energy depends on mass and speed, the higher these two things are the higher the kinetic energy

Question 8

what can kinetic energy be transferred into?

Answer 8

kinetic energy can be transferred into heat, sound and light

Question 9

why do meteors burn up?

Answer 9

When meteors enter the atmosphere they have a very high kinetic energy. Friction due to collisions with particles in the atmosphere transfers some of their kinetic energy into heat energy and work is done. The temperatures are so extreme that most meteors burn up and never hit the earth

Question 10

why can potential energy be converted into kinetic energy?

Answer 10

Potential energy is converted into kinetic energy when an object falls