JEE Main Physics question

Physics Work, Energy and Power JEE Main

A force **F** = (2î + 4ĵ) N displaces a body by **s** = (3ĵ + 5k̂) m in 2 s. The power generated will be

(A)11 W
(B)6 WCorrect
(C)22 W
(D)12 W

Answer: (B)

Solution

W = **F**·**s** = (2)(0) + (4)(3) + (0)(5) = 12 J. Power = W/t = 12/2 = 6 W.

Question ID VK-153631