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Calculating Friction Using Coeffcients

The momentum ...

Question

The momentum $p$ ( in kg m/s) of a particle is varying with time $t$ (in s) as $P = 3 t + 4$ The force acting on the part ta $t = 1 s$ will be

3 N

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4 N

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7 N

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10 N

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Solution

The correct option is A 3 N
Given,
$p = 3 t + 4$
from the Newton force,
$F = \frac{d p}{d t} = 3 N$
The correct option is A.

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