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PHYSICS

PHYSICS. Monday, 12/15/08 PHYSICS. If you do the same old things, you get the same old results!. RECALL: p total initial = p total final if no NET external force is acting.

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PHYSICS

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  1. PHYSICS

  2. Monday, 12/15/08 PHYSICS If you do the same old things, you get the same old results! RECALL: ptotal initial = ptotal final if no NET external force is acting ex. After being struck by a bowling ball, a 1.5kg bowling pin sliding to the right at 3.0m/s collides head-on with another 1.5kg bowling pin initially at rest. Find the final velocity of the second pin if the first pin moves to the right after the collision at 0.5m/s. 2.5m/s to the right

  3. p. 224 #22 a) A 65.0kg ice skater moving to the right with a velocity of 2.50m/s throws a 0.150kg snowball to the right with a velocity of 32.0m/s relative to the ground. What is the velocity of the first ice skater after throwing the snowball? 2.43m/s to the right p. 224 #22 b) A second skater initially at rest with a mass of 60.0kg catches the snowball. What is the velocity of the second skater after catching the snowball in a perfectly inelastic collision? .0797m/s to the right NOTE: “perfectly inelastic collision” – the objects stick together. NOTE: We are NOT ignoring friction!

  4. For a linear system with two objects, there are really only three possible scenarios: (1) the objects start apart, collide, then end apart 2) the objects start together, then split apart 3) the objects start apart, collide, and stick together (called a ‘perfectly inelastic’ collision) HW 29: p. 209/ 2, 3, 4; p. 214/ 2, 4

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