Aprojectile is launched from ground level at angle u and speed v0 into a headwind that causes a constant horizontal acceleration of magnitude a opposite the direction of motion. a. find an expression in terms of a and g for the launch angle that gives maximum range. b. what is the angle for maximum range if a is 10% of g?
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![\frac{\mathrm{d} R}{\mathrm{d} u}=\frac{2v_0^2}{g}\left [ \cos 2u-\frac{a}{g}\sin 2u\right ]=0](/tpl/images/0377/0936/71e7c.png)
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Aprojectile is launched from ground level at angle u and speed v0 into a headwind that causes a cons...
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