A sack of potatoes weighing 200 N falls from an airplane. As the velocity of fall increases, air resistance also increases. When air resistance equals 200 N, the sack's acceleration becomes
A) 0 m/s2.
B) 5 m/s2.
C) 10 m/s2.
D) infinite.
E) none of the above
Answer: A
You might also like to view...
What happens to most of the solar neutrinos between the Sun's core and Earth?
What will be an ideal response?
In a nuclear accident such as occurred at Chernobyl, the long-term biological damage is caused by
A) nuclear fusion occurring within the biological cells. B) the thermal energy produced by radioactive decay within biological cells. C) alpha, beta, and gamma particles passing through biological cells. D) nuclear fission occurring within the biological cells. E) the high energy vibrations of the water molecule that are caused by radioactive isotopes.
Exploration of this part of the atmosphere was conducted in the nineteenth century with hot-air balloons
a. Stratosphere b. Troposphere c. Mesosphere d. Thermosphere
LCD stands for:
a. linearly collimated diffraction. b. longitudinally combined depolarization. c. liquid crystal display. d. lighted compact disk.