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Introductory Physics Homework Help
Calculating Average Speed of Tennis Ball
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[QUOTE="Alucard2487, post: 4495431, member: 487238"] [h2]Homework Statement [/h2] At a time 0.22 seconds after it has been hit by a tennis racket, a tennis ball is located at (6, 8, 0) m, relative to an origin in one corner of a tennis court. At a time 0.26 seconds after being hit, the ball is located at (6.52, 8.16, 5.88) m. Calculate the following results, and include correct units: (b) What is the average speed of the tennis ball? [h2]Homework Equations[/h2] [h2]The Attempt at a Solution[/h2] I had to calculate the average velocity. I got (13, 4, -3) m/s and I have the unit vector (.934, .287, -.215). i know that vavg = deltad/deltat. The problem is that the speed is a scalar and that confuses me. [/QUOTE]
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Calculating Average Speed of Tennis Ball
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