A point mass starts moving in a straight line with a constant acceleration \( a \). At a time \(...
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1A point mass starts moving in a straight line with a constant acceleration \( a \). At a time \( t_{1} \) after the beginning of motion, the acceleration changes sign, remaining the same in magnitude.
Determine the time \( t \) from the beginning of motion in which the point mass returns to the initial position.
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