Test1 Study guid

Test1 Study guid - Test 1 Study Guide PSC1121, Fall2008...

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1 Test 1 Study Guide PSC1121, Fall2008 Chapter1. 1. You should know the definition and meaning of The Scientific Method Hypothesis Physical law Scientific fact Scientific theory How many experiments are necessary to invalidate a scientific hypothesis? 2. Basic units of the Systeme International (SI) Time - the standard unit of time is the second (s) 1 minute = 60 s , 1hour = 60 min = 3600 s Distance - the standard unit of distance is the meter (m) 1km = 1,000 m (one thousand meters) 1cm = 0.01 m = 10 -2 m (one hundredth of a meter) 1mm = 0.001 m = 10 -3 m (one thousandth of a meter) 1 μ m =10 -6 m (one millionth of a meter). 1 yard = 0.9144 meter 1 inch = 0.0254 meter 1 foot = 12 inches = 0.3048 meter 1 mile = 1.61 kilometers= 1609.344 meters Mass – the standard unit of mass is the kilogram (kg) Chapter 2. 3. Definition and meaning of the Newton’s First Law motion reference frame and reference point. speed and velocity force 4. What is a vector quantity? Examples: velocity, force, acceleration 5. Net force is a vector sum of all forces that are exerted upon an object 6. Equilibrium Rule Static Equilibrium: objects are at rest Example: Weight = Support or Normal Force! 123 ... NET FORCE F F F F = =+++ G GGG
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2 Dynamic Equilibrium: objects move at constant velocity Examplse: A car moves with a constant speed if the Applied force = Friction forc ;a terminal speed is achieved when Gravity force (weight) =Air drag force Chapter 3 7. Definition and meaning of the Newton’s Second Law
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This note was uploaded on 05/27/2011 for the course PSC 1121 taught by Professor Khankasayev during the Fall '08 term at Florida A&M.

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Test1 Study guid - Test 1 Study Guide PSC1121, Fall2008...

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