1.

A force of \[2\hat{i}+3\hat{j}+4\hat{k}\ N\]acts on a body for 4 second, produces a displacement of \[(3\hat{i}+4\hat{j}+5\hat{k})m.\]The power used is          [Pb. PET 2001; CBSE PMT 2001]

A.             9.5 W  
B.             7.5 W
C.             6.5 W  
D.             4.5 W
Answer» B.             7.5 W


Discussion

No Comment Found

Related MCQs