- #1

Etheryte

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A quarterback throws a football to a stationary receiver 31.5m away from him. If the football is thrown at an initial angle of 40° to the ground, at what initial speed must the quarterback throw the ball for it to reach the receiver? What's the balls highest point during flight?

2. Homework Equations

3. The Attempt at a Solution

I know this is only one small attempt at rearranging the formula, but trust me if you checked my trash you'd find crumpled up pieces of paper with many more attempts.

I always go through the same procedure;

1. I make my goal to find the initial velocity.

2. To find initial velocity, I need time.

3. To find time, I need /\y.

4. To find /\y, I need the initial velocity.

Please help.