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CBSE Class 9 Answered

how long will it take a force of 10n to stop a mass of 2.5kg which is moving at 20m/s
Asked by | 28 Jul, 2012, 11:40: AM
answered-by-expert Expert Answer
The time taken to stop will be when that opposing force is able to provide an equal opposite force,
I.e is it should match the rate of change of the momentum.
10 N = (2.5*20)/t
t = 5 s
Answered by | 28 Jul, 2012, 02:27: PM

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