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p02_017

Fundamentals of Physics,Vol 1 (Chapters 1 - 20)

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17. We represent its initial direction of motion as the + x direction, so that v 0 = +18 m/s and v = 30 m/s (when t = 2 . 4 s). Using Eq. 2-7 (or Eq. 2-11, suitably interpreted) we find a avg = ( 30) (+18)
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Unformatted text preview: 2 . 4 = − 20 m / s 2 which indicates that the average acceleration has magnitude 20 m/s 2 and is in the opposite direction to the particle’s initial velocity....
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