hmwk1 - (e) What is her velocity at time c (at the top of...

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Homework #1 Due midnight Sunday September 25. 1. Give a sports example of an object that travels a large distance but has a small displacement. 2. Can you give a sports example wherein the acceleration of an object is opposite to the direction of its velocity? Do so if you can. 3. Consider Fig. 3-4 of Hay. (a) Is her velocity positive or negative at time a (while she is pushing off the ground)? (b) Is her acceleration positive or negative at time a (while she is push- ing off the ground)? (c) Is her velocity positive or negative at time e (after she has landed back on the ground)? (d) Is her acceleration positive or negative at time e (after she has landed back on the ground)?
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Unformatted text preview: (e) What is her velocity at time c (at the top of her jump)? (f) What is her acceleration at time c? Warmup Questions Submit answers for both days by 11:00 p.m. Monday September 26. 1. Warmup questions for September 27. Great basketball players like Blake Grifn or the young Kobe Bryant seem to hang in the air for a very long time. What do they do to hang so long? b) Consider a roundtrip outdoor swimming race. Is it easier or harder if there is a current? Why? 2. Warmup questions for September 29. What is the best launch angle to use in the shot put? What is the best launch angle to use on a tennis serve? 1...
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This note was uploaded on 12/12/2011 for the course PHYS 17 taught by Professor Mcwilliams,r during the Fall '08 term at UC Irvine.

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