A book is given a brief shove along a table top and released so that it slides a short distance and comes to rest. Galileo would say that the book stopped because
A) the ether slows it down to a stop.
B) of friction.
C) its natural motion is to come to rest.
D) of its inertia.
E) of gravity.
B
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Which of the following is true of the Jovian planets?
A) They grew by gravitational collapse. B) They did not form from the solar nebula. C) They developed very slowly. D) They did not undergo differentiation.
A particle whose mass is 2.0 kg moves in the xy plane with a constant speed of 3.0 m/s along the direction . What is its angular momentum (in kg?m2/s) relative to the point (0, 5.0) meters?
A.
B.
C.
D.
E.
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What will be an ideal response?
Estimation: A reasonable estimate for the height of the walls in an ordinary American home is
A. 10 m. B. 8 m. C. 2.5 m. D. 1.5 m.