Science—Newton’s Second Law of Motion

Static Friction

The force between an object at rest and the surface it is on

Sliding Friction

Created when solid surfaces slide against each other

Fluid friction

Created when objects move through air or a fluid

Rolling friction

Created when objects roll over a surface

What are the 2 things that the strength of friction depends on?

The types of surfaces interacting, strength with which the surfaces are pushed together.

What are the three things that the amount an object accelerates depends on?

Amount of force pushing on it, direction of the force pushing on it, the mass of the object being pushed

Speed

How quickly something changes position

Friction

A force that pulls when two objects touch

Net force

The sum of all forces acting on an object

Velocity

An objects speed in a certain direction

Acceleration

A change in an object’s velocity (speed or direction).

What is Newton’s Second Law of Motion?

More force=More acceleration