Name ______________________________________________ Date _________ Period ______
Unit 2: Newton’s Laws Review
Equations
g = 9.8 m/s2
d = vavgt
Fg = mg
F = ma
1.
What is Newton’s 1st Law of Motion? Explain what it means in your own words.

2.
Define inertia. What factor most affects inertia? What is the effect?

3.
The SI unit for force is the Newton (N), or
g m
s
.
A dog pulls a toy to the left with a force of 8.0N. Another dog pulls to the right at a force
of 10.0N. Which dog gets the toy? Why?
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7.
Any object in frictionless space requires no net force to keep it moving at a
constant speed.
What is the common SI unit for force? What is the unit written out?
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6.
A 10 kg bowling ball has more inertia because it has higher mass.
What amount of force is necessary to keep a 25 kg ball moving at constant speed through
frictionless space?
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5.
Inertia is an object’s resistance to a change in its motion. Objects with higher
mass have higher inertia.
Which has more inertia: a 10 kg bowling ball or a 0.50 kg golf ball? Why?
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4.
Newtons first law describes inertia. It means that an object at rest stays at rest
and an object in motion stays in motion.
The dog at the right gets the toy because the net force is 2 N to the right.
Both of the men push the box with a force of 250. N. What is the net force and direction
of motion for the box?

The net force is 500. N to the right.