JEE Main Physics question
A body constrained to move in the y-direction is subjected to force **F** = (2î + 15ĵ + 6k̂) N. The work done by this force in moving the body through a distance of 10 m along the y-axis is
Answer: (B)
Solution
Displacement is **s** = 10ĵ m. W = **F**·**s** = 15 × 10 = 150 J.