PHY 2020 Lecture Notes - Lecture 6: Bungee Cord, Muzzle Velocity, Inelastic Collision
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Chapter 6- momentum (cid:498) by momentum we mean inertia in motion(cid:499) What causes a change in velocity: external force. When you push with same force for twice the time, you impart twice the impulse and produce twice the change in momentum. A greater impulse produces a greater change in momentum. Why does a golfer swing through the ball: need to have the largest impact (larger momentum. Be in contact with ball for longest time as possible) Which of the following do not always occur in equal and opposite pairs: acceleration; impulse and momentum change are equal but opposite pairs. Jump off something? momentum when impacted on the floor: knees are bent to absorb the shock and decrease the amount of. In both cases, the impulse provided by the boxer"s jaw reduces the because an occupant hitting the dash has . momentum moves away; he extends the time and diminishes the force.