Question

Need to use Multivariable Calculus to solve the question. Basic
projectile motion algebra equations cannot be used!

A catapult can throw a 80 lb rock up to 100 yards. The maximum
height the rock reaches as it flies through the air toward a
fortress wall 100 yards away is 20 yards, calculate the speed and
angle at which the rock leaves the sling of the catapult. USE
VECTOR CALCULUS!

Answer #1

Please see the attached images

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