If `vec(F ) = (60 hat(i) + 15 hat(j) - 3 hat(k)) N` and `vec(V) = (2 hat(i) - 4 hat(j) + 5 hat(k))` m/s, then instantaneous power is:A. 195 wattB. 45 wattC. 75 wattD. 100 watt

If `vec(F ) = (60 hat(i) + 15 hat(j) - 3 hat(k)) N` and `vec(V) = (2 h

1.	If `vec(F ) = (60 hat(i) + 15 hat(j) - 3 hat(k)) N` and `vec(V) = (2 hat(i) - 4 hat(j) + 5 hat(k))` m/s, then instantaneous power is:A. 195 wattB. 45 wattC. 75 wattD. 100 watt
Answer» Correct Answer - B `P - vec(F).vec(v)` `= (60 hat(i) + 15 hat(j) - 3 hat(k)) . ( hat(i) - 4 hat(j) + 5 hat(k))` = (120 - 6- - 15) = 45 watt

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If `vec(F ) = (60 hat(i) + 15 hat(j) - 3 hat(k)) N` and `vec(V) = (2 hat(i) - 4 hat(j) + 5 hat(k))` m/s, then instantaneous power is:A. 195 wattB. 45 wattC. 75 wattD. 100 watt

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