Q. A body having uniform acceleration of 10$ms^{- 2}$ has a velocity of 100$ms^{- 1}$. In what time, the velocity will be doubled?
A) 8 s
B) 10 s
C) 12 s
D) 14 s
Explanation
(b) $v = u + a\ t$
2$\times 100 = 100 + 10t$ or $t = 10$ s
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.