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At $4\,\text{s}$ after projection, determine the speed and the direction of motion of $B$.
Mathematics 9709 · AS & A Level · Probability
Probability — practice question
A small ball $B$ is launched from point $O$ on horizontal ground. Its initial velocity has horizontal and vertically upward components of $18\,\text{m s}^{-1}$ and $25\,\text{m s}^{-1}$ respectively.
Worked solution & mark scheme
This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The vertical velocity component comes from $v = u + at$, so vertical velocity $= 25 - 4g$” …
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