Question

Momentum acting on a particle is equal to at square - bt Newton per second a and b are constant Find time at force becomes zero​

Answer 1

Solution is in the attachment

Answer 2

Heyamate!!

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As per given

$mv = at {}^{2} - bt \\ \frac{mv}{dt} = 2at - b \\ so \\ ma = 2at - b \\ acco \: \: to \: question \\ 0 = 2at - b \\ so \\ t = \frac{b}{2a}$

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