PHYS 1501Q: MIDTERM 1: UNITS 1-9
19 Cards in this Set
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Relative Motion
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vobj,a = vobj,b + vb,a
Velocity of obj in frame A = velocity in frame B + relative velocity of 2 frames
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Direction of centripetal force
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Towards center
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In UCM, speed is _____, but velocity ______
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Speed is constant
Velocity changes with direction
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Newton's First Law
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Object moving at constant velocity will travel in a straight line w/ constant velocity unless acted upon by a force
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Newton's Second Law
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Force = ma
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Newton's Third Law
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For every force, there is an equal but oppositely directioned force
FAB = -FBA
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True or False: Newton's 3rd Law implies that opposite forces act on different objects and therefore cannot cancel.
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True
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Barrel of fun problem: where do the 3 forces point
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Fn points inward
Gravity points down
Friction points upward
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The frictional force is always ______ to motion and ______ to the normal force
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opposite to motion
perpendicular to normal force
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Forces perpendicular to motion ______ do work
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will not
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2 Conservative Forces
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Gravity and spring force
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True or False: Work by conservative forces depends only on starting and ending points, not on path taken between the points.
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True
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Where are equilibrium positions for conservative forces?
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where slope of potential energy fxn is zero
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Work of a frictional force will always be positive or negative?
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Negative
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Average Velocity
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change in position over change in time
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What makes up mechanical energy
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Ek and Ep
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Change in Ep is equivalent to what in terms of work?
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-WA->B
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Angular velocity denoted with what symbol?
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omega (ω)
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You can use 2D Kinematics to solve a free fall from a moving reference frame. True or False
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True
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PHYS 1501Q: FINAL