Q. A horizontal force of $5N$ is required to maintain a velocity of $2\ m/s$ for a block of $10\ kg$ mass sliding over a rough surface. The work done by this force in one minute is
A) $600\ J$
B) $60\ J$
C) $6\ J$
D) $6000\ J$
Explanation
(a) $W = F \times s = F \times v \times t = 5 \times 2 \times 60 = 600\ J$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.