Please answer the following -

Dear Student ,
2.

mass=m=2kgvt=2ti^+t2j^acceleration=a=dvdt=2i^+2tj^So momentum at t=2 s is=pt=2s=mv=8i^+8j^ unitSo force nat t=2 s is=Ft=2s=ma=4i^+8j^ unit
Kindly ask different question in different posts .
Regards

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