(i)[3]
the distance between the base of the cliff and the point at which the stone enters the sea,
(ii)[3]
the speed of the stone at the instant it enters the sea.
Mathematics 9709 · AS & A Level · Representation of data
the distance between the base of the cliff and the point at which the stone enters the sea,
the speed of the stone at the instant it enters the sea.
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Applies the trajectory equation $y = -\frac{gx^2}{2u^2}$ or $20 = \frac{gt^2}{2}$ to obtain $t = 2$” …