Question
A body is released from rest at t = 0 from a height h from the ground. The body will be at
x from where it was dropped at two times i.e. 
.
What is the significance of negative value of time?
Solution
Using the second equation of motion,
't' is positive implies that body will be at x after time 't' when the particle is dropped.
If the particle was projected in upward direction from ground, then the particle would be at x distance below from the highest point.
't' is positive implies that body will be at x after time 't' when the particle is dropped.
If the particle was projected in upward direction from ground, then the particle would be at x distance below from the highest point.
