Free Fall: An instrument is thrown upward with a speed of 15 m/s on the surface of planet X where the acceleration due to gravity is 2.5 m/s2 and there is no atmosphere. How long does it take for the instrument to return to where it was thrown?
A. 6.0 s
B. 8.0 s
C. 10 s
D. 12 s
Answer: D
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a. constant acceleration. b. free fall. c. centripetal acceleration. d. linear acceleration. e. frequency.
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a. constant acceleration b. free fall c. centripetal acceleration d. linear acceleration e. frequency