8.4 Words Flashcards
1
Q
Mass:
A
Mass: a measure of the amount of material in an object of substance
2
Q
Weight:
A
Weight: a measure of the size of the gravity force pulling an object towards the centre of a massive body, such as the Earth. The weight of an object depends on the object’s mass
3
Q
Newton
A
Newton: the unit for measuring forces
4
Q
Air resistance:
A
Air resistance: the force of air pushing on an object as the object moves through the air
5
Q
Terminal speed:
A
Terminal speed: the constant speed reached by a falling body. A body reaches terminal speed when the force of gravity pulling it down is balanced by the air resistance pushing against it
