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26 December, 23:50

A 200N net force is applied to a tractor in a field. If the 10 000kg tractor starts off at rest and ends up travelling with a speed of 2m/s, how long has this force been applied to the tractor?

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  1. 27 December, 02:32
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    This can be solved using Newtons second law M*a=net force

    we can sub in that 10000kg*a=200n so then we know its accelerating at a rate of 0.02 m/s^2

    using this we can use the equation vf=vi+a*t

    we then have 2m/s=0m/s+.02m/s^2 (t)

    then dividing out the acceleration we find that it would take 100 seconds for the tractor to reach that velocity
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