Recent content by Claymore

  1. C

    Force Problem with football punter

    got it :p that helped out
  2. C

    Force Problem with football punter

    so F=ma: F= 10ms/(.50kg) = 5 m/s correct which equals Velocity(?) so for F= dp/dt what is dp? change in P(?) / change in time so we get F= 5ms/.20s = 25N my question comes from F=dp/dt we use that equation to find out Force? Where can we say that F=dp/dt (as u used) comes from...
  3. C

    Force Problem with football punter

    [SOLVED] Force Problem Homework Statement 2. A football punter accelerates a football from rest to a speed of 10m/s during the time in which his toe is in contact with the ball (about 0.20sec). If the football has a mass of 0.50kg, what average force does the punter exert on the ball...
  4. C

    Initial Velocity of a kicked rock

    put it in Triangle :p so 40m^2 Height x Hd^2 = 1029^2 Hd^2 = 1029^ + 1600 Hd= 32 m correct?
  5. C

    Initial Velocity of a kicked rock

    so speed of sound x time = distance? 343m/s * 3s = 1029 m correct me if I am wrong :(
  6. C

    Initial Velocity of a kicked rock

    well that's the thing how would i find the distance? oh and by the way its a rock (ball) :P
  7. C

    Initial Velocity of a kicked rock

    Homework Statement A soccer player kicks a rock horizontally off a 40.0-m-high cliff into a pool of water. If the player hears the sound of the splash 3.00s later, what was the initial speed given to the rock? Assume the speed of sound in air to be 343 m/s. Homework Equations Well to...
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