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Unformatted text preview: oldhomewk 05 NOORANI, ZOHEB Due: Jan 27 2008, 4:00 am 1 Question 1, chap 2, sect 7. part 1 of 1 10 points An object is released from rest at time t = 0 and falls through the air, which exerts a resistive force such that the acceleration a of the object is given by a = g b v , where v is the objects speed and b is a constant. If limiting cases for large and small values of t are considered, which of the following is a possible expression for the speed of the object as an explicit function of time? 1. v = g t b t 2 2. v = g ( 1 e bt ) b 3. v = ( g e bt ) b 4. v = ( g + a ) t b 5. v = v + g t, v negationslash = 0 Question 2, chap 2, sect 5. part 1 of 1 10 points The Stratosphere Tower in Las Vegas is 1130 ft high. It takes 1 . 1 min, 48 s to ascend from the ground floor to the top of the tower using the high-speed elevator. The acceleration of gravity is 9 . 81 m / s 2 ....
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