A helicopter is traveling at 50.0 m/s at a constant altitude of 150 m over a level field. If a wheel falls off the helicopter, with what speed will it hit the ground? (g = 9.8 m/s2 and air resistance negligible)
a. 63 m/s
b. 55 m/s
c. 74 m/s
d. 54 m/s
c
You might also like to view...
The star Vega rises today at 6:40 A.M. Tomorrow it will rise at ________.
A. 6:32 A.M. B. 6:44 A.M. C. 6:40 A.M. D. 6:44 P.M. E. 6:36 A.M.
How many significant figures are in the number 0.010?
A) four B) three C) two D) one
Quasar's spectral lines are
A) emission lines with large red shifts. B) a continuum from the synchrotron radiation. C) fuzzy absorption lines from the merged light of the billions of stars. D) too complex for any interpretation. E) nonexistent, the gas so hot as to be totally ionized, so no lines are seen.
A rainbow shows separate colors of the spectrum because, at raindrop surfaces,
A. blue light is bent more than red light. B. all colors are bent the same, hence the separation. C. green light is bent more than blue light. D. red light is bent more than green light.