qz3sp08sol - February1,2008 PHY2053Discussion...

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February 1, 2008 PHY2053 Discussion Name:                                   UFID: *1. (5 pts) A stone is thrown horizontally from the edge of a cliff with a speed of 18.0  m/s. The cliff is 50.0 m above a flat, horizontal beach. Find the horizontal range of the  stone. We first calculate the time when the stone hits the surface of the beach: Δy = -(1/2)gt²   -50 = -0.5 × 9.8 × t²  t =  √(50/4.9) = 3.19 s The horizontal displacement at this time is given by Δx = 18 × 3.19 = 57.4 m ***2. (5 pts) In the standard game of darts, a dart is thrown from a point 2.37 m away  form the dartboard and the bullseye is 1.73 m high. Now, a dart is thrown horizontally  toward the dartboard, from an initial height of 1.73 m. It hits the board 0.3 m below the  bullseye. Assuming darts are thrown at the same initial speed, at what angle does a 
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This note was uploaded on 12/13/2011 for the course PHY 2053 taught by Professor Buchler during the Fall '06 term at University of Florida.

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qz3sp08sol - February1,2008 PHY2053Discussion...

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