(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A quarterback can throw 60yd @ 45 degree angle. How fast can he throw?

2. Relevant equations

60 yds = 54.86 meters

3. The attempt at a solution

x-direction

d = vt

4.86 = vcos(45)(t)

y-direction

d = vt + 1/2at^2

d = vsin(45)t + 1/2(9.8)t^2

I want to solve for t in both equations, set them equal, and use that to solve for v but I don't know what to use for d in the y-direction equation. would it be zero because it ends up on the ground?

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# A quarterback can throw 60yd @ 45 degree angle. How fast can he throw?

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