11. Momentum & Impulse
Intro to Conservation of Momentum
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- Multiple Choice
Object A moves at 10 m/s at 53° and Object B moves at 5 m/s at –37° as shown below. Calculate the magnitude of the system's total momentum if both objects have a mass of 2kg.
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On a frictionless air hockey table, puck A of mass 0.250 kg moves to the right and collides with puck B of mass 0.38kg, which is initially at rest. After the collision, puck A is moving the left at 0.12 m/s and puck B moves to the right at 0.65 m/s. What was the initial velocity of puck A before the collision?
1005views35rank1comments - Multiple ChoiceAn ice skater is spinning with outstretched arms. As he pulls his arms in toward his body, what happens to the rate at which he is spinning, and why?531views
- Textbook Question
(I) A 110-kg tackler moving at 2.5 m/s meets head-on (and holds on to) an 82-kg halfback moving at 4.4 m/s. What will be their mutual speed immediately after the collision?
358views - Textbook Question
A 22-g bullet traveling 240 m/s penetrates a 2.0-kg block of wood and emerges going 130 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?
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