ch07-p051 - 51. (a) The objects displacement is d = d f di...

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(3.00 N)( 8.00 m) (7.00 N)(6.00 m) (7.00 N)(2.00 m) 32.0 J. WF d =⋅= + + = G G (b) The average power is given by Eq. 7-42: avg 32.0 8.00 W. 4.00 W P t == = (c) The distance from the coordinate origin to the initial position is 22 2 (3.00 m) ( 2.00 m) (5.00 m) 6.16 m, i d =+ + = and the magnitude of the distance from the coordinate origin to the final position is 222 ( 5.00 m) (4.00 m) (7.00 m) 9.49 m f d =− + + = . Their scalar (dot) product is
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This note was uploaded on 03/19/2010 for the course PHYSICS 191262 taught by Professor Najafzadeh during the Spring '09 term at The Petroleum Institute.

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