PHY 2020 Lecture Notes - Lecture 6: Nylon, Headon, Muzzle Velocity

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17 Feb 2017
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Momentum and impulse and stuff (cid:498)by momentum we mean inertia in motion(cid:499) Because the momentum of ship is inertia. When you push with the same force for twice the time, you impact twice the impulse and produce twice the change in momentum. A greater impulse produces a greater change in momentum. Why does a golfer"s swing through the ball? ball for longest time as possible. Need to have the largest momentum (larger) momentum. Acceleration; impulse and momentum change are equal but opposite pairs. Knee are bent to absorb the shock and decrease the amount of momentum when impact of the floor. Padded dashboards in cars are safer in an accident than non-padded ones because an occupant hitting the dash has Make impact of dashboard as long as possible. Padded dashboards, gymnasts, nylon ropes, automobile (before-rigid, after- designed to crumple) Homework questions: a freight train rolls along a track with considerable momentum.

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