1.

The position vector of a particle is determined by the expression \[\vec{r}=3{{t}^{2}}\hat{i}+4{{t}^{2}}\hat{j}+7\hat{k}\] The distance traversed in first 10 sec is                [DPMT 2002]

A.            500 m                                      
B.            300 m
C.            150 m                                      
D.            100 m
Answer» B.            300 m


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