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20 May, 10:14

A car going 30 meters a second undergoes an acceleration of 2 meters a second squared for 4 seconds. What is its final speed? How far did it travel while it was accelerating?

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Answers (2)
  1. 20 May, 10:27
    0
    v = u + at where v = final speed, u = initial speed, a = acceleration and t = time.

    so here final speed v = 30 + 2*4 = 38 m/sec. answer

    Distance travelled during this time

    = (30 + 38) * 4 / 2 = 68 * 2 = 136 m answer
  2. 20 May, 10:28
    0
    30-2 = 28m

    28X4=112m/s
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