向量
1.(12points)(a)Drawthefollowingtwovectorsonthepaper,andaddthemgraphically.
vectora:5.0cminthe+ydirection
vectorb:3.0cminthe-xdirection
(b)Usingaruler,measurethemagnitudeoftheresultantvectorc(=a+b)
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(c)UsingthePhythagoriantheorem,calculatethemagnitudeofcandcompareitwiththe
measurement
(d)Whatistheanglebetweenthevectorcandvector
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x05x05x05x05x05x05
x05x05x05x05x05x05x05
2.(8points)(a)Drawthefollowingtwovectorsonthepaper,andaddthemgraphically.
vectora:4.0cmfromtheorigintowards-ydirectionatanangleof45degreesfromthe+x
axis
vectorb:6.0cminthe+xdirection
(b)Drawavectord(=a-b)
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x05x05x05x05x05x05
x05x05x05x05x05x05x05
3.(6points)Drawthefollowingthreevectorsonthepaper,andaddthemgraphically.
vectora:3.0cmfromtheorigintowards+ydirectionatanangleof30degreesfromthe+x
axis
vectorb:4.0cmfromtheorigintowards+ydirection
vectorc:5.0cmfromtheorigintowards-xdirection
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x05x05x05x05x05x05
x05x05x05x05x05x05x05
4.(12points)Addthefollowingtwovectorsusingtheircomponentsandfindthemagnitude
andthedirection(anglewithrespecttothe+xaxis)oftheresultantvector.
vectora:9.0cmfromtheorigintowards+ydirectionatanangleof22degreesfromthe-x
axis
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vectorb:4.0cminthe-ydirection
我不是要翻译，我是完全没学过这个.
