A point mass is projected, making an acute angle with \( \mathrm{P}...

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A point mass is projected, making an acute angle with
\( \mathrm{P} \) the horizontal. If angle between velocity \( \vec{v} \) and

W acceleration \( \vec{g} \) is \( \theta \) at any time \( t \) during the motion, then \( \theta \) is given by
(1) \( 0^{\circ}\theta^{\circ}90^{\circ} \)
(2) \( \theta=90^{\circ} \)
(3) \( \theta90^{\circ} \)
(4) \( 0^{\circ}\theta180^{\circ} \)
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