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Sin contest question from 2003- Can't figure this question it's exam review! help

  1. Jan 21, 2007 #1
    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?
     
  2. jcsd
  3. Sep 7, 2010 #2
    Re: Sin contest question from 2003-- Can't figure this question... it's exam review!

    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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