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May 29, 2015

Homework Help: physics

Posted by sam on Thursday, June 10, 2010 at 10:46pm.

9.
A stone is thrown at an angle of 30° above the horizontal from the top edge of a cliff with an initial speed of 19.6 m/s. A stop watch measures the stone's trajectory time from top of cliff to bottom to be 6.7 s. How far out from the cliff's edge does the stone travel horizontally? (g = 9.8 m/s2 and air resistance is negligible)
A) 58 m
B) 114 m
C) 120 m
D) 175 m
E) 197 m

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