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Related Flashcards
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Cards In This Set
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What is speed?
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Speed is how fast something is going. It has magnitude only and equals distance over time.
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What is velocity?
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Veloctiy is how fast something is going and in what direction. It has magnitude and direction and equals displacement over time.
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What is acceleration?
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Acceleration is the change in velocity over the change in time.
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What is average velocity?
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Average velocity is
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What is average acceleration?
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Average acceleration is the average change in velocity over the average change in time.
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What are the four fundamental forces in the universe?
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1.) Gravity
2.) Electromagnetic 3.) Strong Nuclear Force 4.) Weak Nuclear Force |
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What are Newton's three laws of Motion?
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1.) Law of inertia
2.) Force equals mass times acceleration. (F=MA) 3.) Every action has an equal and opposite reaction. |
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What does the law of inertia state?
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The law of inertia states that an object at rest tends to stay at rest and an object in motion tends to stay in motion.
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Describe work.
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Work is energy and is calculated by multiplying force times distance and is measured in joules.
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What is the relationship between work, kinetic energy, and potential energy?
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Work equals kinetic energy which equals potential energy.
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True or false?
Simple machines make work easier because they change the direction and
amount of force, but do not make less work.
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True
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