A) 18
B) 6
C) 54
D) 20
Correct Answer: D
Solution :
Power = Rate of work done = \[\frac{W}{t}\] \[=\frac{F\times d}{t}=\frac{\left( 2\hat{i}3\hat{j}+16\hat{k} \right)\left( \hat{i}+2\hat{j}+4\hat{k} \right)}{3}\] \[=20 watt\]You need to login to perform this action.
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