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Applies to questions of primarily educational value - not only questions that arise from actual homework assignments, but any question where it is preferable to guide the asker to the answer rather than giving it away outright. Please READ THE GUIDANCE IN META before asking homework-like questions.

2 votes

Projectile motion Need hint

You could try thinking in terms of kinetic and potential energy. If they have the same speed at a given level that means that their potential energies are equal and their kinetic energies are equal to …
K. Kirilov's user avatar