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Knock on and forward pass undefined?
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<blockquote data-quote="smartcooky" data-source="post: 951668" data-attributes="member: 20605"><p>No it isn't</p><p></p><p></p><p>No it isn't, but it actually doesn't need to be measured, because the ball has the momentum of the player who is carrying it.</p><p></p><p>If that player, especially a back, is running at, say a 100m in 15 seconds pace (not unreasonable) then the player is running at over six and a half metres per second (6.7 m/s to be precise) and that means the ball MUST also have that momentum since the player is holding it. These are FACTS; not the Laws of Rugby, the Laws of Physics; simple, 8th Grade (Year 13) school physics.</p><p></p><p>This means the player passing the ball, just to throw the directly backwards to a player behind him, must throw the ball backwards at over 6.7 m/s to cancel that momentum. If you think that is hard, then wait, there's more; it gets harder, the wider the pass is either side of straight behind,</p><p></p><p>A pass at 45° has to be thrown at 9.5 m/s (35 km/h).</p><p>A flatter pass at, say 22.5° behind level with the passer, has to be thrown at 17.5 m/s (63 km/hr)</p><p>Reduce that to what would a reasonable pass angle of 10° and the speed of the pass required to cancel ball carrier's momentum is 38.6 m/s (139 km/h).</p><p>A flat pass of 1° behind level has to be thrown at literally supersonic speed; 384 m/s (1380 km/hr)</p><p></p><p></p><p></p><p>No you would not be happy at all, because the game would be unplayable at anything beyond walking pace.</p></blockquote><p></p>
[QUOTE="smartcooky, post: 951668, member: 20605"] No it isn't No it isn't, but it actually doesn't need to be measured, because the ball has the momentum of the player who is carrying it. If that player, especially a back, is running at, say a 100m in 15 seconds pace (not unreasonable) then the player is running at over six and a half metres per second (6.7 m/s to be precise) and that means the ball MUST also have that momentum since the player is holding it. These are FACTS; not the Laws of Rugby, the Laws of Physics; simple, 8th Grade (Year 13) school physics. This means the player passing the ball, just to throw the directly backwards to a player behind him, must throw the ball backwards at over 6.7 m/s to cancel that momentum. If you think that is hard, then wait, there's more; it gets harder, the wider the pass is either side of straight behind, A pass at 45° has to be thrown at 9.5 m/s (35 km/h). A flatter pass at, say 22.5° behind level with the passer, has to be thrown at 17.5 m/s (63 km/hr) Reduce that to what would a reasonable pass angle of 10° and the speed of the pass required to cancel ball carrier's momentum is 38.6 m/s (139 km/h). A flat pass of 1° behind level has to be thrown at literally supersonic speed; 384 m/s (1380 km/hr) No you would not be happy at all, because the game would be unplayable at anything beyond walking pace. [/QUOTE]
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Knock on and forward pass undefined?
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