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A force vec(F) = (40 hat (i) + 10 hat(...

A force ` vec(F) = (40 hat (i) + 10 hat(j))` N acts on body of mass 5 kg. If the body starts from rest, its position vector `vec(r)` at time t = 10 s, will be

A

`(100 hat(i) + 400 hat(j))m`

B

`(100 hat(i) + 100hat(j))`m

C

`(400 hat (i) + 100 hat(j))m`

D

`(400 hat (i) + 400 hat(j))m`

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