What is wrong with my math here? [Kinematics]

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The discussion centers on a misunderstanding in calculating the kinetic and potential energy of a skateboarder on a ramp. The skateboarder starts with an initial horizontal velocity of 6.5 m/s, but a calculation error led to an incorrect value of 6.8 m/s. This discrepancy affected the final velocity calculation at the top of the ramp, which was found to be 5.77 m/s. The participant expressed frustration over the confusion, despite the problem being rooted in basic physics principles. Accurate calculations are crucial for solving kinematics problems effectively.
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Homework Statement


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Homework Equations


I was trying to compare the initial KE/PE with the final KE/PE in order to find out how far the skateboarder rose but the solution was wrong for some reason?

Keep in mind the skateboarder is traveling along the HORIZONTAL portion of the ramp at 6.5m/s so when he gets to the top of the ramp he will only be traveling at 5.77m/s by my calculations.

The Attempt at a Solution


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Somehow, the skateboarder's initial horizontal velocity morphed from 6.5 m/s to 6.8 m/s in your calculations of KE/PE. Bad handwriting, perhaps? :frown:
 
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SteamKing said:
Somehow, the skateboarder's initial horizontal velocity morphed from 6.5 m/s to 6.8 m/s in your calculations of KE/PE. Bad handwriting, perhaps? :frown:
WOW, thanks so much. I was killing myself over this question and probably spent ~3 hours trying to rack my brain around it even though it's basic physics.
 

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