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An object of mass 100 kg is accelerated ...

An object of mass 100 kg is accelerated uniformly from a velocity of `5 m s^(-1)` to `8ms^-1` in 6 s. Calculate the initial and final momentum of the object. Also, find the magnitude of the force exerted on the object.

Text Solution

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`P_(1) = mv`
` = 100 xx 5 = 50` kg m/s
Find momentum `P_(2) = m gt v`
` = 100 xx 8 = 800` kg m/s
`F = ma = 100((v -u)/(t)) = 100 xx (3)/(6) = 50` N
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