IB Mathematics Applications and Interpretation Quiz
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A ball's movement on a table is modelled by x(t)=10t−2t2x(t) = 10t - 2t^2 and y(t)=8ty(t) = 8t, for t≥0t \ge 0, with distances in cm. The table has a wall at x=12x=12. Find the speed of the ball at the moment it first hits this wall.
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