A truck travelling with uniform acceleration crosses P two points \...

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A truck travelling with uniform acceleration crosses
P two points \( A \) and \( B \) with velocities \( 60 \mathrm{~m} / \mathrm{s} \) and

W \( 40 \mathrm{~m} / \mathrm{s} \) respectively. The speed of the body at the midpoint of \( A \) and \( B \) is nearest to:
(1) \( 17 \mathrm{~m} / \mathrm{s} \)
(2) \( 20 \mathrm{~m} / \mathrm{s} \)
(3) \( 19.49 \mathrm{~m} / \mathrm{s} \)
(4) \( 50.9 \mathrm{~m} / \mathrm{s} \)
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