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Starting at t = 0 s , a horizontal net force F? =( 0.290 N/s )ti^+(-0.460...

Starting at t = 0 s , a horizontal net force F? =( 0.290 N/s )ti^+(-0.460 N/s2 )t2j^ is applied to a box that has an initial momentum p? = ( -3.05 kg?m/s )i^+( 4.00 kg?m/s )j .What is the momentum of the box at t = 2.10 s ?

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