3.1 gravity, weight and mass Flashcards
1
Q
what is gravity?
A
the force that acts between all objects with mass, and acts towards the centre of the earth
2
Q
what is the measurement for gravity?
A
N/kg (gravitational field strength)
3
Q
what is mass?
A
the quantity of matter in an object
4
Q
what is weight?
A
the force of gravity on an object
5
Q
what is the measurement for mass?
A
kg/g
6
Q
how to change weight into mass?
A
weight ÷ gravitational field strength = mass
7
Q
what is the measurement for weight?
A
N/Newtons
8
Q
explain how people who visit the south pole don’t fall off the earth.
A
the force of gravity pulls them to the centre of the earth
