6.1.1.2 - Charges in Energy

Question 1

What is the kinetic energy equation?

Answer 1

Kinetic energy = 0.5 x mass x (speed)²
Kinetic energy in joules, J.
Mass in kilograms, kg.
Speed in metres per second, m/s.

Question 2

What is the elastic potential energy equation?

Answer 2

Elastic potential energy = o.5 x spring constant x (extension)²
Elastic potential energy in joules, J.
Spring constant in newtons per metre, N/m.
Extension in metres.

Question 3

What is the gravitational potential energy equation?

Answer 3

Gravitational potential energy = mass x gravitational field strength x height.
Gravitational potential energy in joules, J mass, m, in kilograms, kg.
Gravitational field strength in newton per kilogram, N/kg.
Height in metres, m.

(In any calculation the value of the gravitational field strength (g) will be given).