2.3 Mass and InertiaMass1. Mass is defined as theamount of
matter.2. The SI unit of mass iskilogram(kg)3. Mass is
ascalarquantity.Larger Mass - Greater Inertia
Bucket filled with sand is more difficult to be moved. It's also
more difficult to be stopped from swinging.
Explanation: Object with more mass offers a greater resistance
to change from its state of motion. Object with larger mass has a
larger inertia.Empty Cart is Easier to be moved
An empty trolley is easier to be moved compare with a cart full
with load. This is because a trolley with larger mass has larger
inertia, so the harder it is to change its state of motion.
4. Momentum is defined as the product of mass and velocity.5.
Momentum is a vector quantity. It has both magnitude and
direction.6. The SI unit of momentum is kgms-17. The greater the
mass or the velocity of the moving object is, the greater is the
momentum.Formula:
Principle of Conservation of Momentum
1. An example of an external force is friction.2. The principle
of conservation of momentum is true for a closed system.A closed
system is one where the sum of external forces acting on the system
is zero.
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