Processing Math: Done
Solution 8.6b
From Mechanics
(Difference between revisions)
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Using once again <math>\mathbf{r}=\mathbf{u}t+\frac{1}{2}\mathbf{a}{{t}^{\ 2}}+{{\mathbf{r}}_{0}}</math> we get | Using once again <math>\mathbf{r}=\mathbf{u}t+\frac{1}{2}\mathbf{a}{{t}^{\ 2}}+{{\mathbf{r}}_{0}}</math> we get | ||
+ | |||
+ | <math>\mathbf{r}=(6\mathbf{i}-8\mathbf{j}) \times 40+35\mathbf{i}+70\mathbf{j}=275\mathbf{i}-250\mathbf{j}</math> |
Revision as of 18:36, 15 April 2010
We aassume the starting point is the origin. This means
The boat first accelerates to a point
Using
10+21(0.5i−j)
10 2+0=35i+70j
The next stage has
Using once again
40+35i+70j=275i−250j