Unformatted text preview: ◦ = − 8 . 7 m / s , which means that the distance y (which was measured as a positive number downward from the top of the wall) is shrinking at the rate of 8 . 7 m/s. (c) Since tan θ grows as 0 ≤ θ < 90 ◦ increases, then a larger value of  dy/dt  implies a larger value of θ . The Sun is higher in the sky when the hawk glides by. (d) With  dy/dt  = 45 m/s, we ±nd v hawk = ¯ ¯ ¯ ¯ dx dt ¯ ¯ ¯ ¯ = ¯ ¯ ¯ dy dt ¯ ¯ ¯ tan θ so that we obtain θ = 72 ◦ if we assume v hawk = 15 m/s....
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.
 Fall '08
 SPRUNGER
 Physics

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