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07.03.2020 •
Mathematics
Two competing catapults launch pumpkins. Catapult A launches from a starting height of 10ft and an initial upward velocity of 45ft/sec. Catapult B launches from a starting height of 25ft and an initial upward velocity of 40ft/sec. Which pumpkin, A or B, achieves a greater maximum height?
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Ответ:
For these projectiles,
where
is the projectile's final velocity (which is 0 at maximum height),
is its initial velocity,
is the acceleration due to gravity, and
is its initial height.
Let
denote the maximum heights of pumpkins A and B, respectively. Then
So pumpkin A reaches a greater maximum height.
Ответ: