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phy131studiof15:lectures:chapter3 [2015/07/27 16:20] mdawber [3.P.003] |
phy131studiof15:lectures:chapter3 [2015/08/31 08:47] mdawber [Vectors - Multiplication by a scalar] |
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| ===== 3.P.003 ===== | ===== 3.P.003 ===== | ||
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| + | ===== 3.P.005 ===== | ||
| ===== Unit Vectors ===== | ===== Unit Vectors ===== | ||
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| | $v_{Rx}=v_{1x}+v_{2x}$ <html>   </html> | $\tan\theta_{R}=\frac{v_{Ry}}{v_{Rx}}$ <html>   </html> | | | $v_{Rx}=v_{1x}+v_{2x}$ <html>   </html> | $\tan\theta_{R}=\frac{v_{Ry}}{v_{Rx}}$ <html>   </html> | | ||
| | $v_{Ry}=v_{1y}+v_{2y}$ <html>   </html> | $v_{R}=\sqrt{v_{Rx}^2+v_{Ry}^2}$ <html>   </html> | | | $v_{Ry}=v_{1y}+v_{2y}$ <html>   </html> | $v_{R}=\sqrt{v_{Rx}^2+v_{Ry}^2}$ <html>   </html> | | ||
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| + | ===== 3.P.027 ===== | ||
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| + | ===== 3.P.042 ===== | ||
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| + | ===== 3.P.051 ===== | ||
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| + | ===== 3.P.062 ===== | ||
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| ===== Vectors - Multiplication by a scalar ===== | ===== Vectors - Multiplication by a scalar ===== | ||
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| + | Multiplication of a vector by a scalar can change the magnitude, but not the direction of the vector, ie. each component of the vector is multiplied by the scalar in the same way. | ||
| + | ===== 3.P.071 ===== | ||
