ch04-p080 - 80. We make use of Eq. 4-44 and Eq. 4-45. The...

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80. We make use of Eq. 4-44 and Eq. 4-45. The velocity of Jeep P relative to A at the instant is ˆˆ ˆ ˆ (40.0 m/s)(cos60 i sin 60 j) (20.0 m/s)i (34.6 m/s)j. PA v + ° = + G Similarly, the velocity of Jeep B relative to A at the instant is ˆ ˆ (20.0 m/s)(cos30 i sin30 j) (17.3 m/s)i (10.0 m/s)j. BA v + ° = + G Thus, the velocity of P relative to B is ˆ ˆ (20.0i 34.6j) m/s (17.3i 10.0j) m/s (2.68 m/s)i (24.6 m/s)j. PB PA BA vvv =−= + + = + GGG (a) The magnitude of PB v G is 22 | | (2.68m/s) (24.6m/s) 24.8 m/s.
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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