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Unformatted text preview: ! = a F r r m : (c) What is the ball’s acceleration (magnitude and direction) at the instant it comes to rest momentarily at the top of its motion? = a r ____________________. P1112 Lab Notes Prelab 42 Cornell University, Spring 2009 2. Suppose instead that when the ball is moving at a certain speed, it experiences (in addition to its weight) a force due to the air equal in magnitude to 5 1 of the ball’s weight, but always directed opposite to the ball’s velocity through the air. (a) What is the ball’s acceleration (magnitude and direction) while it is rising ( ↑ ) at this speed? = a r ____________________. Please draw the relevant freebody diagram , and show your calculation, starting with ! = a F r r m : (b) What is the ball’s acceleration (magnitude and direction) while falling ( ↓ ) at this speed? = a r ____________________. Please draw the relevant freebody diagram , and show your calculation, starting with ! = a F r r m :...
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 Spring '07
 LECLAIR,A
 Force, Velocity, Euclidean vector, Cornell University, relevant freebody diagram

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