Frictions

frictions

Rolling Friction

between surfaces in motion and one object is a wheel, roller or ball.

Ex. riding a bike, bowling

sliding Friction

When 1 solid surfaces slide to one another

ex: writing, ice skating.

Static Friction

surfaces in contact are at rest

ex; book on table, flower pot on a side walk.

Fluid

object are moving through air water

Arrows are used to represent both

strength and direction

The force formula

Mass X acceleration

the force that always acts in direction opposite to the motion of an object

friction

_is not a force

mass

Jeff pushes a box what causes it to move

an applied force