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A particle of mass 2 kg is moving with v...

A particle of mass `2 kg` is moving with velocity `vec(v)_(0) = (2hat(i)-3hat(j))m//s` in free space. Find its velocity `3s` after a constant force `vec(F)= (3hat(i) + 4hat(j))N` starts acting on it.

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`vecp_f=vecp_i+vecI_(mp)rarr" "mvecv_f=mvecv_0+vecFDeltat`
Substituting given values, we have
`2vecV_f=2(2hati-3hatj)+(3hati+4hatj)xx3=13hati+6hatj`
`vecv_f=(6.5hati+3hatj)m//s`
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