Physics Section 1

Question 1

What is the formula for kinetic energy?

Answer 1

kinetic energy = 0.5 x mass x (speed)^2

Question 2

What is kinetic energy measured in?

Answer 2

Joules

Question 3

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

Answer 3

GPE = mass x gravitational field strength x height

Question 4

What is the formula for elastic energy?

Answer 4

elastic potential energy = 0.5 x spring constant x (extension)^2

Question 5

What is Internal energy

Answer 5

The total kinetic and potential energy of all the particles that make up a system

Question 6

What is the formula for work done?

Answer 6

Work done = force x distance

Question 7

What is the formula for change in thermal energy?

Answer 7

change in thermal energy = mass x specific heat capacity x temperature change

Question 8

What is mass measured in?

Answer 8

kg

Question 9

What does the term reproducible mean and why is it important?

Answer 9

It means that if you do the experiment again you would get the same result. This helps account for any errors of anomalies and helps show the experiment is valid.

Question 10

What are the two key points when looking at energy transfer?

Answer 10

-Energy can be transferred usefully, stored or dissipated
-Energy cannot be created or destroyed

Question 11

What are the two categories all energy resources fall into?

Answer 11

-Renewable energy resources
-Non-renewable energy sources