physics / projectiles.mdon commit analyse TSSM exam 9 (22af18a)
   1# Projectile motion
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   3- Horizontal velocity ($v_x$) remains constant if no drag
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   5- Vertical acceleration ($a_y$) $= -g$
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   7## Calculating velocity from $x$ and $y$ components
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   9${\displaystyle v={\sqrt {v_{x}^{2}+v_{y}^{2}\ }}}$
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  11## Displacement
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  13$x=v_{0}t\cos(\theta)$
  14$y=v_{0}t\sin(\theta )-{\frac  {1}{2}}gt^{2}$
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  16## Maximum height of an arc
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  18$h={\frac  {u^{2}\sin ^{2}(\theta )}{2g}}$
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  20## Time of flight
  21$y=u\ t\sin(\theta )-{\frac  {1}{2}}gt^{2}$