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PHSC 101 EXAM 1 REVIEW Questions and answers.

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PHSC 101 EXAM 1 REVIEW Questions and answers.

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  • July 9, 2024
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PHSC 101 EXAM 1 REVIEW
equilibrium
No net force acts on an object.


1. Observe
2. Question
3. predict
4. Test prediction
5. Draw a conclusion
Scientific Method

Aristotle
- 384-322 BC
- foremost philosopher, scientist, and educator of his time


Natural motion
Objects seek their natural resting places: heavy things fall and light things rise; motions
considered natural-not caused by forces.


Violent motion
imposed motion resulting from an external push or pull. It had an external cause. Objects in
their natural resting place could not move by themselves.


-Heavy objects fall faster than lighter object.
-Moving objects must have forces exerted on them to keep them moving.
Two assertions of Aristotle held for sway nearly 2000 years


Galileo Galilei
- Italian polymath
- Central figure in the transition from natural philosophy to modern science
- First to build a telescope, and first to direct it to the nighttime sky and discover mountains
on the moon and the moons of Jupiter.


Discovered that in the absence of friction, no force is necessary to keep a horizontally
moving object moving.
Inclined planes experiment


Newton's first law

, law of inertia, is a restatement of Galileo's idea that a force is not needed to keep an object
moving.
Newton's first law states that every object continues in a state of rest, or of uniform speed in
a straight line, unless acted on by a nonzero net force.


greater; smaller
greater mass = ____________ inertia; smaller mass = ____________ inertia


different
Weight is ______ in all locations.


the same
Mass is _______ in all locations.


Inertia
Mass is _______


the same
Inertia is _______ in all locations.


Mass
-how much matter an object contains
-measured in the unit of kilograms, grams, pounds


Volume
-how much space an object occupies
-measured in units of cubic centimeters, cubic meters, and liters


Density
-the measure of how much mass occupies a given space
-grams per cubic centimeter or kilograms per cubic meter


density = mass/volume
Equation for density


A
The concept of inertia mostly involves
A. mass.

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