6.1.1.2 changes in energy

Question 1

What is the equation for kinetic energy?

Answer 1

Kinetic energy ( Ek, Joules, J) = 0.5 x mass (m, kilograms, kg) x (speed)² (v, metres per second, m/s)

Question 2

How do you calculate elastic potential energy?

Answer 2

Elastic potential energy ( Ee, Joules, J) = 0.5 x spring constant (k, newtons per metre, N/m) x (extension)² (e, metres, m)

Question 3

How do you calculate gravitational potential energy?

Answer 3

Gravitational Potential Energy (Ep, Joules, J) = mass (m, Kilograms, kg) x gravitational field strength (g, Newtons per kilogram, N/kg) x height (h, Metres, m)