04 mass, weight & density Flashcards
1
Q
Definition
Mass
A
A measure of the amount of substance in an object.
2
Q
Definition
Weight
A
Force of gravity acting upon an object.
3
Q
Definition
Gravitational Field
A
A region in which a mass experiences a force due to the gravitational attraction.
4
Q
Definition
Gravitational Field Strength
A
The gravitational force acting per unit mass
5
Q
Formula
Weight
A
W = mg
m = mass in kilograms, kg
g = 10 m/s2 unless specified
6
Q
Definition
Inertia
A
The reluctance of the object to change either its state of rest or if its moving, its motion in a straight line.
7
Q
Definition
Density
A
Mass per unit volume
Unit: kilogram per cubic metre, kg/m3
8
Q
Formula
Density
A
ρ = m/ v
ρ = density (rho)
m = mass of object
v = volume of object
