Physics, 16.01.2020 05:31 ayoismeisalex
Aprojectile is fired from the origin of the coordinate system with an initial velocity v0 in a direction making an angle α with the horizontal. calculate the time required for the projectile to cross a line passing through the origin and making an angle β < α with the horizontal.
Answers: 2
![t\left [ u\sin \alpha -u\cos \alpha \tan\beta -\frac{gt}{2}\right ]=0](/tpl/images/0457/2751/93ba7.png)
![t=\frac{2u\left [ \sin \alpha -\cos \alpha \tan \beta \right ]}{g}](/tpl/images/0457/2751/660bf.png)
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