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## Homework Statement

A football started on the ground 64 yards from the base of the goal post and barely clears the 10 ft high bar. The initial trajectory of the football was 43 deg above the horizontal. What was its initial speed?

## Homework Equations

## The Attempt at a Solution

(vf)^2 = (vi)^2 + 2a(x)

(0) = (vi)^2 + 2(-9.8)(10)