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Chapter 1 Review - Ffr ict ion Add t he t wo vect or s...

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v1 v2 Triangle: d=12(v× t) Triangle and Rectangle: d=12(v2+v1) t t1 t2 v1+v2 v1 v2 = = v2 v1 = + v2 v2 v1 = = 2 v2 - v1 v1-v2 1 Reverse v2 v2 v2 Add the two vectors Reverse v2 Ffriction TEST 1 REVIEW By: Vaibhav Mokashi Topic Details Definitions Mechanics – study of the motions of objects and the forces that act on them Kinematics – study of motion without regards to the forces that cause those motions Statics – study of forces acting on objects at rest Dynamics – study of the action of forces on bodies and the changes in motion they produce Scalar – quantities with magnitude only Vector – quantities with magnitude and direction Distance – total travel of object without direction Displacement – net travel of an object from starting to ending point with direction Position – displacement from a given origin Average speed – distance travel per unit of time Average velocity – displacement per unit time with direction Instantaneous velocity and speed – measurement at a moment in time
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Uniform Motion – Constant Velocity (horizontal line) Projectile Motion – is used to describe events where the object moves under the influence of gravity and is not self powered – has vertical and horizontal components Parabolic – curved Range – horizontal displacement Relative Motion - is movement in relation to a frame of reference vog – velocity of the person or object relative to the ground vmg – velocity of the medium the person or object relative to the ground vom - velocity of the person or object relative to the medium he/she/it is in Significant Digits 1. All numbers in a measured value are significant 3102. 32 6 significant digits 2. Leading zeros are not significant. 0. 00 502 (Bolded numbers are insignificant, italicized numbers are significant – all numbers after decimals are significant) 3. Adding and Subtracting The answer must contain the number of DECIMALS of the number with the fewest 4. Multiplying and Dividing The answer must contain the number of DECIMALS of the number with the fewest 5.
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