Q. A uniform force of 4 N acts on a body of mass 10 kg for a distance of 2.0 m. The kinetic energy acquired by the body is
A) $4 \times 2 \times 2$ J
B) $4 \times 4 \times 2 \times 10^{8}$ erg
C) $4 \times 2$ J
D) $4 \times 4 \times 2$ erg
Explanation
(c) $Work\ done\ = \ force\ \times \ distance\ = \ 4\ N\ \times \ 2\ m\ = 8\ J$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.