At the end of the lesson, students are able to:

I. Explain what inertia is.II.Relate mass to inertia.III.Give examples of situations

involving inertia.

What happen to the coin when the cardboard is pulled quickly???

What is the condition of the ladder whenthe truck is moving with uniform velocity?the truck suddenly stopped?

Inertia is not physical quantity and thus it does not have units

The property of inertia is found from the Newton’s first law of motion

Inertia is not physical quantity and thus it does not have units

The property of inertia is found from the Newton’s first law of motion

Sir Isaac Newton(1642-1727)

Every object continues in its states of rest , or of uniform motion in a straight line, unless it is acted on by an external force.

INERTIA defined as the tendency of an object to remain at rest or if its moving , to continue its motion in a straight line

A B

An object with a larger mass has a

larger inertia.

An object with a larger mass has a

larger inertia.

Slamming hammer

Pouring out tomato sauce

A person is thrown forward

Pulling a book

We have learntI. what inertia is.II. relationship between mass to inertia.III.examples of situations involving inertia.