Hard Stick Billiard
Hard Stick Billiard
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 3X6 Hard Pool Cue Stick Carry Case Black Billiard 3 x 6  US $39.95
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 3X6 Hard Tubed Pool Cue Billiard Stick Carrying Case Brown 3 x 6 US $39.95
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 2X2 Hard Billiard Pool Cue Stick Carry Case Pink Black US $27.45 |
 1X1 Hard Pool Cue Billiard Stick Carrying Case Pink 1 x 1 US $8.45
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 1X1 Hard Pool Stick Cue Case Black Billiard 1 x 1 New US $8.45
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 3X6 Hard Tubed Pool Cue Stick Carry Case Blue Billiard 3 x 6 US $39.95
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 3X6 Hard Tubed Pool Cue Stick Carry Case Billiard 3 x 6 Black US $39.95
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 3X6 Hard Tubed Pool Cue Stick Carry Case Pink Billiard 3 x 6 US $39.95
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 2X2 Hard Tubed Pool Cue Stick Carry Case Pink Billiards 2 x 2 US $27.45
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 2X2 Hard Tube Pool Cue Billiard Stick Carrying Case Red 2 x 2 US $27.45
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 Black 2X2 Hard Tube Pool Cue Billiard Stick Carrying Case 2 x 2 US $27.45
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 1X1 Hard Pool Stick Cue Carrying Case Billiard 1 x 1 Black US $8.45
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 2X2 Hard Tube Pool Cue Billiard Stick Carrying Case 2 x 2 Black US $27.45
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 2X2 Hard Tube Pool Cue Billiard Stick Carry Case Red 2 x 2 US $27.45
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 2X2 Hard Pool Cue Stick Carry Case Grey Billiard 2 x 2 US $27.45
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 2X2 Brown Hard Tubed Pool Cue Billiard Stick Carry Case Billiard 2 x 2 US $27.45
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 2X2 Hard Tubed Billiard Pool Cue Stick Carry Case Blue Black US $27.45
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 2X2 Hard Billiard Pool Cue Stick Carry Case Brown Black US $27.45
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 New 2B 2S Black Pool Billiard Cue Stick Hard Tube Case for 2 cues with Pockets US $44.89
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 Pink 1X1 Hard Pool Cue Billiard Stick Case 1 x 1 W Pocket Carrying Strap US $8.45
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 3X6 Hard Tube Pool Cue Stick Carry Case Billiard 3 x 6 Black US $39.95
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 Pro Series Brown Croc Leatherette 1B1S 1x1 Pool Billiard Hard Cue Stick Case US $21.59
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 1X2 Hard Tube Pool Cue Stick Billiard Carrying Case Gray 1 X 2 US $17.95
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 1X2 Hard Pool Cue Stick Billiard Case Gray 1 X 2 US $17.95
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 1X2 Hard Pool Cue Stick Billiard Case Black 1 X 2 US $17.95
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 1X1 Hard tube Pool Stick Cue Case Red Billiard cue case US $9.80
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 2X4 Hard Tube Pool Cue Billiard Stick Case Black White W Stand 2 x 4 US $64.95
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 1X2 Hard Tube Pool Cue Stick Billiard Case Pink 1 X 2 US $17.95
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 2X2 Hard Tube Billiard Pool Cue Stick Carry Case Brown Black US $27.45
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 Red Black 2X2 Hard Tube Pool Cue Billiard Stick Carrying Case 2 X 2 US $27.45
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 3X6 Hard Pool Cue Stick Carry Case Brown Billiard 3 x 6 US $39.95
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 Pro Sport 2x4 2B4S Black Gray Racing Stripes Hard Pool Billiard Cue Stick Case US $143.99
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 Pro Sport 2x4 2B4S Black Yellow Racing Stripes Hard Pool Billiard Cue Stick Case US $140.79
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 Pro Series BROWN Ostrich Style Square 2x2 2B2S Pool Billiard Hard Cue Stick Case US $47.99
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 Pro Series BLACK Ostrich Style Square 2x2 2B2S Pool Billiard Hard Cue Stick Case US $47.99
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 Pro Series 2x4 2B4S Brown Pool Billiards Hard Polyform Soft Look Cue Stick Case US $95.99
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PHYSICS-i tried as hard as i could i cant figure out stupid little things!?
if you could help me with a couple questions i am completely stuck on, i would be incredibly grateful, thank you.
1. a 0.40 kg ball is thrown with a speed of 12 m/s at an angle of 33 degrees.
a) what is the speed at its highest point
b) how high does it go ( use conservation of energy, and ignore air resistance.)
2. Two billiard balls of equal mass undergo a perfectly elastic head-on collision. if one ball's initial speed was 2.00 m/s and the other's was 3.00 m/s in the oposite direction, what will be their speed after the collision?
Answers: 1. a)10 m/s
b)2.2 m
2. -3.00 m/s and 2.00 m/s
I've tried both these questions a bunch of times, and i am continuously getting them wrong. for #2, i can understand the idea that they switch speeds and direction, but how do i explain this in mathematical steps to prove it?
THANKS FOR YOUR TIME!
1) a) speed at highest point = u cos(33) = 12 x 0.8387 = 10.06 m/sec
b) the hieght it goes H = u^2 sin^2(33) / 2 g
= 144 x (0.5446)^2 / 2x9.8 = 2.179 m = 2.2 m
2) due to equal mass the balls simply exchange their speeds. hence, the speeds become - 3 m/sec and 2 m/sec. that's it.
( physics is not stupid, we are stupid not able to understand the concepts. ok )
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