Physics

Problem

A projectile is fired with a speed of

50\,\text{m s}^{-1}

at an angle of

30^{\circ}

above the horizontal. Determine the two possible horizontal distances from the point of projection at which the projectile is

20\,\text{m}

above the launch level. Take

g = 9.8\,\text{m s}^{-2}