# MASS VS WEIGHT

```MASS VS WEIGHT
Newton’s Second Law
• The fundamental relation between the mass
and the weight is defined by Newton's Second
Law and can be expressed as
• F=ma
~where
• F = force (N)
• m = mass (kg)
• a = acceleration (m/s2)
What is Gravity? What is Weight?
• Gravity: a force of attraction between objects.
• Weight: Measure of the gravitational force on
an object.
The Differences Between Weight and
Mass
• Weight is related to mass, but they are NOT the SAME!
• Mass: is the amount of matter in an object.
• An objects mass does NOT CHANGE!
Weight
• Your weight depends on how much gravity is acting on you at
the moment; you'd weigh less on the moon than on Earth,
and in interstellar space you'd weigh almost nothing at all.
Mass
• Mass is often called as weight.
• Mass can be measured in both metric and customary
units.
• Kilogram, gram, and milligram are the metric units
whereas ounces and pounds are the customary units
• A balance is used to calculate the mass of an object.
Units of Weight and Mass
• Gravity is a force and weight is a measure of gravity.
• Weight can be measured in newton's (N)
• Mass is measured in kilogram (kg), grams (g), and milligrams
(mg).
• For example: on Earth, a 100 g object, such as an apple,
weighs about 1 N on Earth
Mass Vs. Weight Video!
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Create Mass Vs. Weight T-Chart!
• Turn to the next available page in your ENB.