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01-09-2018
Physics

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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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Аноним Аноним

01-09-2018

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

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01-09-2018

30-2 =28m
28X4=112m/s

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