Page 12 - Science Course 2 (Book 2)

Mo8-L1a: How Does Gravity Affect Forces?

Mass is the amount of matter in an object. Key Concept

Mass is often measured in kilograms (kg). How Does Gravity Affect Forces?

What is the law of universal gravitation?

The SI unit for force is the newton (N).

Gravitational force The gravitational force
increase if the mass between objects
of at least one of the decreases as the
objects increases. objects move apart. SUMMARY
How Does Gravity Affect Forces?
Arrows can be used to show both the strength and
direction of force. Forces can be either contact, such as a karate
chop, or noncontact, such as gravity. Each type
Sir Isaac Newton developed the law of universal is described by its strength and direction.
gravitation in the late 1600s.

The law of universal gravitation states that all objects
are attracted to each other by a gravitational force.

Gravity is an attractive force that acts between
any two objects that have mass. The attraction
is stronger for objects with greater mass.
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