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A particle is projected at a speed of $25\,\text{m s}^{-1}$ at an angle of $50^\circ$ above the horizontal. Calculate the time after projection when the particle has speed $18\,\text{m s}^{-1}$ and is rising.
Mathematics 9709 · AS & A Level · Probability
Probability — practice question
Worked solution & mark scheme
This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Determines the vertical component of velocity from $V_v^2 = 18^2 - (25\cos50)^2$” …
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