What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a ...

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What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of \( 8.0 \mathrm{~m} / \mathrm{s} \) when going down a slope for \( 5.0 \mathrm{~s} \) ?
(A) \( 0.85 \mathrm{~m} / \mathrm{s}^{2} \)
(B) \( 1.1 \mathrm{~m} / \mathrm{s}^{2} \)
(C) \( 1.9 \mathrm{~m} / \mathrm{s}^{2} \)
(D) \( 1.6 \mathrm{~m} / \mathrm{s}^{2} \)
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