1mastering physics

# 1mastering physics - 1 Vectors Part A What is the x...

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1. Vectors Part A What is the x component of ? Express your answer to two significant figures. =2.50Correct Part B What is the y component of ? Express your answer to the nearest integer. =3.00Correct Part C What is the y component of ? Express your answer to the nearest integer. =−3.00Correct Part D What is the component of ? Express your answer to the nearest integer. =−2.00Correct The following questions will ask you to give both components of vectors using the ordered pairs method. In this method, the x component is written first, followed by a comma, and then the y component. For example, the components of would be written 2.5,3 in ordered pair notation.

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The answers below are all integers, so estimate the components to the nearest whole number. Part E In ordered pair notation, write down the components of vector . Express your answers to the nearest integer. , =2.00,−3.00Correct Part F In ordered pair notation, write down the components of vector . Express your answers to the nearest integer. , =2.00,−3.00Correct Part G What is true about and ? Choose from the pulldown list below. They are the same vectors.Correct 2.2Part A
Which of the following procedures will add the vectors and ? Put the tail of on the arrow of ; goes from the tail of to the arrow of Correct It is equally valid to put the tail of on the arrow of ; then goes from the tail of to the arrow of . Part B Find , the length of , the sum of and . Express in terms of , , and angle . =sqrt(A^2+B^2+2*A*B*cos(theta))Solution Requested Part C Find the angle that the vector makes with vector . Express in terms of and any of the quantities given in the problem introduction ( , , and/or ) as well as any necessary constants. Use asin for arcsine =asin((sin(pi-theta)*B)/C)Correct Addition using vector components Part D To manipulate these vectors using vector components, we must first choose a coordinate system. In this case choosing means specifying the angle of the x axis. The y axis must be perpendicular to this and by convention is oriented radians counterclockwise from the x axis. Indicate whether the following statement is true or false: There is only one unique coordinate system in which vector components can be added.

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falseCorrect Part E The key point is that you are completely free to choose any coordinate system you want in which to manipulate the vectors. It is a matter of convenience only, and so you must
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## This document was uploaded on 01/25/2010.

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1mastering physics - 1 Vectors Part A What is the x...

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