Answers

2014-03-28T15:01:52+01:00
V=80m/s V•=20m/s t=20s a=? V=v•+at 80=20+20a 80-20=20a 60=20a a=60/20 a=3m/s^2
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2014-04-01T21:41:33+01:00
Formula used= Change in velocity divide by time

Velocity= 80-20
            = 60

Acceleration= 60/20
                  =3m/s^2

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