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Unformatted text preview: ) 2 1 ( 2 2 2 = = gt b) s m . 5 . 24 s) 5 . 2 )( s m 80 . 9 ( 2 = = gt . c) 3.60: a) x = 6.93 m. b) c) m 3 6 . x = , so the man will not be hit. 3.63: a) y = m 15 ., the change in height. v = 17.8 m/s. b) 28.4 m from the near bank 3.67: Take y + to be downward. a) ? m, 20 , m/s 80 . 9 , 2 = == = t y y a v y y s 02 . 2 gives 2 2 1 = + =t t a t v y y y y The rock must travel 100 m horizontally during this time, so m/s. 49 = x v b) ? m, 45 , m/s 80 . 9 , 2 = == = t y y a v y y s 03 . 3 gives 2 2 1 = + =t t a t v y y y y During this time the rock travels horizontally m 150 = s The rock lands 50 m past the foot of the dam....
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 Spring '11
 darp
 Physics, Summation, The Rock

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