1.

A particle moves with a velocity \[6\hat{i}-4\hat{j}+3\hat{k}\,m/s\]under the influence of a constant force \[\overrightarrow{F}=20\hat{i}+15\hat{j}-5\hat{k}\,N.\,\]The instantaneous power applied to the particle is                 [CBSE PMT 2000]

A.                 35 J/s    
B.                 45 J/s
C.                 25 J/s    
D.                 195 J/s
Answer» C.                 25 J/s    


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