Page 19 - Science Course 2 (Book 2)

Newton’s First Law of Motion Mo8-L2a: What is Newton’s First Law of

Lesson 2 Motion?

unbalanced forces
In this topic, you will learn the following forces acting on an object that combine and form a
lessons: net force that is not zero.
Mo.8–L2a: What is Newton’s First Law of
Motion?

What is Newton’s First Law of
Mo8-L2a Motion?

KEY CONCEPTS:
1. What is Newton’s f rst law of motion?
2. How is motion related to balanced and
unbalanced forces?
3. What effect does inertia have on the motion of an Newton’s First Law of Motion
object? law that states that if the net force acting on an
object is zero; the motion of the object does not
change.
Vocabulary A-Z

Let us learn some vocabulary

net force
the combination of all the forces acting on an object.

inertia
the tendency of an object the resist a change in
motion.

balanced forces
forces acting on an object that combine and form a
net force of zero.

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