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10 Cards in this Set
- Front
- Back
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lever arm is also called a_______ it describe the _______ distance from the ________ along which |
moment arm perpendicular distance from the axis of rotation along which the force acts |
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Another name for torque is |
the moment of force about the axis |
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_____ torque is usually positive while ________ torque is usually negative |
c-c, clockwise |
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law of conservation of momentum |
the total momentum of an isolated system of an object remains constant |
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total momentum is conserved in _________ collision(s). |
ANY |
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In an elastic collision, ________ energy is also conserved, as well as momentum In a _______ collision, this energy is not conserved. |
kinetic energy as well as momentum an inelastic |
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A ________ collision is where the objects stick together after colliding |
completely inelastic |
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The _________ is the point at which the net force can be considered to act, for purposes of finding out about the translational motion. |
center of mass |
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An ________ describes the amount of force delivered to an object over a short period of time. The short time allows us to calculate this, even for variable forces. |
impulse
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a completely elastic collision turns all of its kinetic energy into potential energy and then back again into kinetic energy - a perfect bouncy ball a completely inelastic collision = a bowling ball, it does not bounce |
see other side |
