Chapter Eight, Lesson Two: Friction and Gravity Flashcards
1
Q
friction
A
The force that two surfaces exert on each other when they rub against each other is called friction.
2
Q
sliding friction
A
Sliding friction occurs when two solid surfaces slide over each other.
3
Q
static friction
A
Static friction acts between objects that aren’t moving.
4
Q
fluid friction
A
Fluid friction occurs when a solid object moves through a fluid.
5
Q
rolling friction
A
When an object rolls across a surface, rolling friction occurs.
6
Q
gravity
A
Gravity is a force that pulls objects toward each other.
7
Q
mass
A
Mass is a measure of the amount of matter in an object.
8
Q
weight
A
Weight is a measure of the force of gravity on an object.
