Janice throws a stone horizontally from the roof edge of a 50. meter high dormitory. It hits the ground at a point 60. m from the building. What was the initial velocity?
A) 19. m/s
B) 22. m/s
C) g m/s
D) 5.5 m/s
E) 25. m/s
A
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Uniform Circular Motion: Pulling out of a dive, the pilot of an airplane guides his plane into a vertical circle. At the bottom of the dive, the speed of the airplane is 320 m/s. What is the smallest radius allowable for the vertical circle if the pilot's apparent weight is not to exceed 7.0 times his true weight?
A. 1700 m B. 1500 m C. 2200 m D. 230 m E. 42 m
______ is a measure of audio quality.
A. Stream rate B. Playback value C. Optimization D. Bit depth
What magnitude net force is required to accelerate a 1200-kg car uniformly from 0 m/s to 27.0 m/s in 10.0 s?
A) 1620 N B) 11800 N C) 4360 N D) 444 N E) 3240 N
When you stand with only one of your feet on a weighing scale, the scale reading is
A) half. B) the same as with both feet. C) doubled. D) none of the above