A certain force exerted for 1.2sec raises the speed of an object from 1.8m/s to 4.2m/s.Find its acceleration.If mass of the object is 5.5kg,calculate the force applied.
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acceleration=4.2-1.8/1.2
=2.4/1.2
=2m/s^2
force =m*a
=5.5*2
=11N
=2.4/1.2
=2m/s^2
force =m*a
=5.5*2
=11N
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