Q. A body travels for 15 $\sec$ starting from rest with constant acceleration. If it travels distances $S_{1},S_{2}$ and $S_{3}$ in the first five seconds, second five secods and next five seconds respectively the relation between $S_{1},S_{2}$ and $S_{3}\mathbf{\ }$is
A) $S_{1} = S_{2} = S_{3}$
B) $5S_{1} = 3S_{2} = S_{3}$
C) $S_{1} = \frac{1}{3}S_{2} = \frac{1}{5}S_{3}$
D) $S_{1} = \frac{1}{5}S^{2} = \frac{1}{3}S_{3}$
Explanation
(c) If the body starts from rest and moves with constant acceleration then the ratio of distances in consecutive equal time interval $S_{1}:S_{2}:S_{3} = 1:3:5$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.