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16 March, 18:05

A car travels at 15 m/s for 10 s. It then speeds up with a constant acceleration of 2.0 m/s2 for 15 s. At the end of this time, what is the magnitude of its velocity? A). 45 m/s B). 15 m/s C). 30 m/s D). 375 m/s

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  1. 16 March, 18:26
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    V o = 15 m/s, a = 2 m/s², t = 15 s

    v = v o + a · t

    v = 15 m/s + 2 m/s² · 15 s = 15 m/s + 30 m/s = 45 m/s

    Answer: A) 45 m/s
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