An object of mass $2 \,kg$ at rest at origin starts moving under the action of a force $\vec{F}=\left(3 t^2 \hat{i}+4 \hat{j}\right) N$ The velocity of the object at $t=2 \,s$ will be ............. $m / s$
An object of mass $2 \,kg$ at rest at origin starts moving under the action of a force $\vec{F}=\left(3 t^2 \hat{i}+4 \hat{j}\right) N$ The velocity of the object at $t=2 \,s$ will be ............. $m / s$
- A
$(3 \hat{i}+2 \hat{j})$
- B
$(2 \hat{i}+4 \hat{j})$
- C
$(4 \hat{i}+4 \hat{j})$
- D
$(3 \hat{i}-4 \hat{j})$
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