A ball is kicked from level ground with an initial speed of

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

30\,\text{m}\!\cdot\!\text{s}^{-1}

. Neglecting air resistance and taking

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

, what is the smaller of the two possible launch angles that will allow the ball to land

50\,\text{m}

away on the same horizontal level? (a)

45^{\circ}

(b)

33^{\circ}

(c)

17^{\circ}

(d)

30^{\circ}