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Avector has x component of -25.0 units and y component of 40.0 units find the magnitude and direction of the vector: |
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Answer» SOLUTION :CONSIDER a vector `vecA=A_(s)hati+A_(y) hatj` ` :. vecA=-25 hati+40 hati` `|vecA|= SQRT(A_(x)^(2)+A_(y)^(2))= sqrt((-25.0)^(2)+(40.0)^(2))` and `tan ALPHA=(A_(y))/(A_(x))=(40.0)/(-25.0)=1.6` `:. alpha= taun^(-1)(-1.6)=-58.0^(0)` with -ve x axis. This is in clock wise direction). This is equivalent to `(122^(@))` in anticlockwise direction with the x-axis. |
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