lesson 2 Flashcards
1
Q
weight
A
measure of the pull of gravity on mass
2
Q
mass
A
the amount of matter in object
3
Q
gram
A
unit for measuring for mass
4
Q
spring scale
A
used to measure force
5
Q
newton
A
metric unit of force
6
Q
balance scale
A
used to find the mass of an object
7
Q
friction
A
a force that opposes motion between two surfaces that are in contact
8
Q
air resistance
A
friction between a moving object and the air around it
9
Q
kilogram
A
measure of mass and weight
10
Q
air density
A
number of air molecules in a given molecule
