Mathematics 9709 · AS & A Level · Representation of data

Representation of data — practice question

A small ball is fired from a point on horizontal ground with speed $16\text{ m s}^{-1}$ at an angle of $45^{\circ}$ above the horizontal.

(main)[4]

Calculate the length of time, before the ball lands, for which the speed of the ball is below $12\text{ m s}^{-1}$.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Energy relation $v^2 = 12^2 - (16\cos45)^2$” …