hi forbiddensinner, can i say we use t=5 for 1st ball distance
travelled as the 2nd ball is 4s behind the 1st ball.
so 1s after the 2nd ball is thrown, the 1st ball has travelled
5s?
n y we dun use t=4 for 2nd ball distance travelled
Yes, we use t=5 as the 2nd ball is 4s behind the 1st ball.
We don't use t=4, and use t=1, as the 2nd ball has only
travelled for 1s.
The 'h' formula given in this case has been stated as height
above cliff, hence you can safely assume that positive numbers =
distance above cliff and negative numbers = distance below
cliff.
Thus, you can directly sub in "t" timings.