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**[SOLVED] x and y component problem?**

## Homework Statement

http://loncapa3.physics.sc.edu/cgi-bin/plot.png?file=dengjh_sc_1202847653_17793457_plot.data [Broken]

u will need that graph to solve this problem

) A golf ball is struck at ground level. The speed of the golf ball as a function of the time is shown in the figure., where t = 0 at the instant the ball is struck. How far does the golf ball travel horizontally before returning to ground level? i found this to be 112m and it is right

What is the maximum height above ground level attained by the ball?

## Homework Equations

S = (1/2)*a*t^2

## The Attempt at a Solution

Looks like the ball travels for 4 sec. When the speed is minimum (that speed looks like 27.5 m/s to me) it has reached its peak so the vertical component of speed has gone to zero. All the remaining velocity is horizontal, 27.5 m/s. And that's the horizontal velocity,Vh, during the entire 4 seconds. So the horizontal distance h is found from

Vh = h / total time

Vertical distance: It took 2 seconds to return to the ground from that peak,

S = (1/2)*a*t^2

now i tried using the equation but it didnt work. can someone point me to the right directioin

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