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Solution 8.4a

From Mechanics

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Using <math>\mathbf{v}=\mathbf{u}+\mathbf{a}t\ \</math> at <math>\ \ t=10</math> gives
Using <math>\mathbf{v}=\mathbf{u}+\mathbf{a}t\ \</math> at <math>\ \ t=10</math> gives
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<math>\mathbf{v}=4\mathbf{i}– 8\mathbf{j}+(0.2\mathbf{i}+0.3\mathbf{j})\times 10\ \</math> or
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<math>\mathbf{v}=6\mathbf{i}– 5\mathbf{j}</math>

Revision as of 15:57, 13 April 2010

Here we have a=02i+03j   u=4i–8j   and   r0=6i+2j.

Using v=u+at   at   t=10 gives

v=4i–8j+(02i+03j)10   or

v=6i–5j



Using r=ut+21at 2+r0

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