Which of the following statements is not one of Newton's Laws of Motion?
A) What goes up must come down.
B) The rate of change of momentum of an object is equal to the net force applied to the object.
C) In the absence of a net force acting upon it, an object moves with constant velocity.
D) For any force, there always is an equal and opposite reaction force.
A
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Metric system: How many nanoseconds does it take for a computer to perform one calculation if it performs 6.7 × 107 calculations per second?
A. 15 ns B. 67 ns C. 11 ns D. 65 ns
Some people say that, based on the arrangement of its molecules, glass should be considered a liquid. If we think of glass as a liquid, in which of these properties is it most unlike other common liquids?
A. Transparency B. Viscosity C. Density D. Weight
For every 100 gallons of gasoline you use in your car, the amount that actually goes into moving the car down the road is roughly
A) 10 gal. B) 50 gal. C) 2 gal. D) 98 gal. E) 75 gal.
Human reaction time is usually greater than 0.10 s. If your friend holds a ruler between your fingers and releases it without warning, how far can you expect the ruler to fall before you catch it, assuming negligible air resistance?
A) at least 3.0 cm B) at least 4.9 cm C) at least 6.8 cm D) at least 9.8 cm