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

Question: James and Steve have a contest to see who can kick a football further. James kicks the football at an angle up of 57 degrees, and a speed of 75m/s. Steve kicks the ball with a speed of 100m/s, at an angle up of 48 degrees? Who wins the contest?

Vix=75cos57

viy=75sin57

2. Relevant equations

First, I don't really understand what variables I have and don't have. I know you can find Vix but doing 75cos57 and viy by doing 75sin57. I think I have to find time but like I said I am don't understand what variables I have or what variables I need.

Secondly, is this a two part questions? The fact that there are two different people is really confusing me.

3. The attempt at a solution

okay here is my small attempt. I assumed that vfy=0 and vfx=0 (this doesn't seem right but I tried it anyway). Then I pulled what variables I think I had into this equation: vfx=vix+axt

With the number it looked like this 0=40.8-9.81(t)

-40.8=-9.81

t=4.15

After this I just didn't know what to do.

What I need help with: I need help clarifying the variables and knowing what variables I need

Knowing what equation to use

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# Homework Help: Homework problem on projectile motion

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