Gravity

Question 1

What does gravitational field strength mean

Answer 1

Force per unit mass. Measure in newtons per kilogram (N/kg)

Question 2

What does weight mean

Answer 2

The force acting on an object due to the pull of gravity from a massive object like a planet. The force acts towards the centre of the planet and is measured in newtons (N)

Question 3

What does mass mean

Answer 3

The amount of matter an object contains. Mass is measured in kilograms (kg) or grams (g)

Question 4

What does work done mean

Answer 4

The amount of energy it takes to do a task. Measured in joules (J). For example, the work done in raising a mass through 10m would be equal to the gain in potential energy of the mass