Question
A football quarterback shows off his skill by throwing a pass 45.50 m downfield and into...
A football quarterback shows off his skill by throwing a pass 45.50 m downfield and into a bucket. The quarterback consistently launches the ball at 39.00 ∘ above horizontal, and the bucket is placed at the same level from which the ball is thrown.
A) What initial speed is needed so that the ball lands in the bucket?
Express your answer to three significant figures and include appropriate units.
B) By how much would the launch speed have to be increased if the bucket is moved to 48.20 m downfield?
Express your answer to two significant figures and include appropriate units.
Answers
0=39° K1390 C R = 45. 5m - Sinzo R = m² sinzo g =) m2 = Rg = 45.5%9.8 = 455.86 mys Sinzo sin (78°) u=21.35 m/s Now the new Range = 48.20 48.20= 12 sin 2 (390) » Sin (78°) w12 = 48.20g =) w12= 48.209 = 482.91 mys sin780 u'= 21.975 m/s u-u= 0.625 m/s Ay 0.62 mys
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