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This 2 page Class Notes was uploaded by Tiffany Mae Paskiewicz on Thursday October 1, 2015. The Class Notes belongs to PHYS 1100 at Rensselaer Polytechnic Institute taught by a professor in Fall 2015. Since its upload, it has received 17 views. For similar materials see Physics I in Physics 2 at Rensselaer Polytechnic Institute.
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Date Created: 10/01/15
Vectors Position and displacement vectors Vector Addition and subtraction Velocity and acceleration vectors Multiplying vectors Vector and Scalar Vector: a quantity that has both magnitude and direction Scalar: a quantity that has only magnitude How to express a Vector: Graphical: An arrow with a magnitude and directions Components: a component of a vector is the projection of the vector on an axis; the x- component and the y-component. o Magnitude is the square root of x + y 2 Unit vectors: a vector that has a magnitude of 1 and points in a particular directions; it specifies only a direction. Position Vector The Location of a particle relative to the origin is given by a position vector. Displacement Vector Displacement is the shortest distance from the initial to the final position Average velocity in 3 dimensions: Time (t) scalar Position (r->) vector Displacement: Δr->=r->-r-> 0 Time interval: Δt= t-0 Definitions Acceleration: velocity is speeding up, slowing down, or changing direction Speed: magnitude of the velocity vector Speeding up: velocity vector’s magnitude is increasing Slowing down: velocity vector’s magnitude is decreasing
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