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phy131studiof15:lectures:chapter3 [2015/07/27 16:33] mdawber [Vectors - Components] |
phy131studiof15:lectures:chapter3 [2015/08/31 09:05] mdawber [Vectors - Components] |
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| {{vectorcomponentadd.png}} | {{vectorcomponentadd.png}} | ||
| + | The angles $\theta_{1}$ and $\theta_{2}$ are defined with respect to the positive $x$ axis, ie. $\theta_{1}$ is negative and $\theta_{2}$ is positive. | ||
| | $v_{1x}=v_{1}\cos\theta_{1}$ <html>   </html> | $v_{2x}=v_{2}\cos\theta_{2}$ <html>   </html> | | | $v_{1x}=v_{1}\cos\theta_{1}$ <html>   </html> | $v_{2x}=v_{2}\cos\theta_{2}$ <html>   </html> | | ||
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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 ===== | ||
