Physics

Problem

A ball is projected from the ground with speed

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

at an angle of

30^{\circ}

above the horizontal. Taking

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

, which of the following is the correct equation of its trajectory (with

x

and

y

in metres)? a)

y = 0.87x - 0.010x^{2}

y = 0.58x - 0.010x^{2}

y = 0.58x - 0.021x^{2}

y = 0.58x - 0.008x^{2}