A ball is projected with speed at an angle of to the horizontal

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

Problem

A ball is projected with speed

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

at an angle of

30^{\circ}

to the horizontal. Taking

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

, determine the slope

\dfrac{dy}{dx}

of its trajectory when its horizontal displacement is

15\,\text{m}

. (a)

0.58

(b)

-0.49

(c)

0.09

(d)

0.21