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10 October, 03:07

A force of 6.0 newtons changes the momentum of a moving object by 3.0 kilogramâ¢meters per second. how long did the force act on the mass?

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  1. 10 October, 03:09
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    0.5 s A newton is defined as 1 kg*m/s^2 and momentum is defined as kg*m/s. We want an answer in seconds. Looking at the available units, we have 1 extra value of seconds, but it's in the denominator. Since we want it in the numerator, that means that we divide by that quantity. So: 3.0 kg*m/s / 6.0 kg*m/s^2 = 0.5 s Therefore the force of 6.0 newtons acted upon the moving object for 0.5 seconds.
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