Q. From a high tower at time $t = 0$, one stone is dropped from rest and simultaneously another stone is projected vertically up with an initial velocity. The graph of the distance $S$ between the two stones, before either his the ground, plotted against time $t$ will be as
A) [image:3_image6.emf]
B) [image:3_image7.emf]
C) [image:3_image8.emf]
D) [image:3_image9.emf]
Explanation
(a) $S_{1} = \frac{1}{2}ft^{2},S_{2} = - v_{0}t - \frac{1}{2}gt^{2}$, Clearly, $(S_{1} - S_{2}) \propto t$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.