Arock falls of a cliff and falls for 3 seconds. how high was the cliff?

Solution

In this question we have given

time,t = 3 s

here rock is falling from a cliff, Therefore, in this case gravitational acceleration will act on rock which is g=

Let s be the height of cliff

here, initial velocity of rock,u=0

we know from second equation of motion

............(1)

here a=g=

put values of u,t and a in equation (1)

therefore, height of the cliff is 44.1m

i just did an experiment like this in my science class. also the answer is yes, it will get separated because they are two opposites meaning if they are opposite they can not attract.

hope this .!