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Determine the speed of $B$ when its path is inclined at an angle of $20^\circ$ above the horizontal.
Mathematics 9709 · AS & A Level · Representation of data
Representation of data — practice question
A small ball $B$ is fired from a point on horizontal ground with speed $38\,\text{m s}^{-1}$ at an angle of $30^\circ$ above the horizontal.
Worked solution & mark scheme
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Set the initial horizontal velocity equal to the final horizontal velocity, for example $v\cos20^\circ = 38\cos30^\circ$.” …
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