Gravity Flashcards
1
Q
What does gravitational field strength mean
A
Force per unit mass. Measure in newtons per kilogram (N/kg)
2
Q
What does weight mean
A
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)
3
Q
What does mass mean
A
The amount of matter an object contains. Mass is measured in kilograms (kg) or grams (g)
4
Q
What does work done mean
A
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
