JEE Main 2026 Physics question
A body of mass 1 kg moves along a straight line with a velocity v=2x². The work done by the body during displacement from x=0 to 5 m is J.
Answer: (C)
Solution
At x=5, v=2(25)=50 m/s; at x=0, v=0. By the work–energy theorem, W=½(1)(50)²−0=1250 J.