Solve Complex Sin Contest Question from 2003 | Exam Review Help

AI Thread Summary
The discussion revolves around a 2003 exam question where a child throws a ball at a 45-degree angle from 5 meters away from a 4-meter high fence. The key point is understanding that "just grazes the fence" means the ball reaches a height of 4 meters at the fence. Participants clarify that the lack of initial velocity is not an error, as the question focuses on the trajectory rather than specific speed. The problem requires calculating how far the ball lands beyond the fence, given its trajectory. The conversation highlights the importance of interpreting the question correctly for solving the physics problem.
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Sin contest question from 2003-- Can't figure this question... it's exam review! help

the questions is: A kid is 5m from a fence that is 4 m high. He throws a ball @ 45 degrees from the horizontal which just grazes the fence. How far beyond the fence does the ball land? You may assume that the ball was thrown from the same level as the ground on the far side of the fence

When the question says " just grazes the fence" how high does that mean and is there a mistake because the initial velocity is not given?
 
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It probably means it's 4m high at the moment it goes over the fence. So it's not a mistake that the initial velocity is not given.

Edit: I'm sorry i just realized that this is 3+ year old post -_-
 

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