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

An athlete executing a long jump leaves the ground at a 25° angle and lands 6.30 m away.

What was his take off speed?

2. Relevant equations

(In all equations, X can be substituted for Y in entire equation)

Vy= Voy + AyT

Vy^2 = Voy + 2AyY

Y=VoyT + (1/2)AyT^2

3. The attempt at a solution

The answer is 8.98 m/s. I can't figure out how to do this problem, and need to understand this for an upcoming final. I have worked several other similar problems, but none without a known velocity and/or time.

Any insight into how to even begin would be greatly appreciated.

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# Homework Help: Projectile problem w/ unkown velocity/time

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