A girl running a race accelerates at 2.5m/s2 from the first 4 seconds of race. How far does she travel in this time?
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u=0 t=4s a=2.5m/s^2
s=ut+1/2at^2
=0+1/2 x 2.5 x 4^2
=2.5 x 8
=20m
s=ut+1/2at^2
=0+1/2 x 2.5 x 4^2
=2.5 x 8
=20m
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