A person sitting on the top of a tall building is dropping balls at regular intervals of one second. Find the positions of the 3rd, 4th and 5th ball when the 6th ball is being dropped.

Drops of water from the roof of a house are falling at a regular interval of one second. Find the position of 3rd, 4th and 5th drops when the 6th drop just falls from the roof.

The balls are released from the top of a tower of heigh H at regular interval of time. When first ball reaches at the grund, the nthe ball is to be just released and ((n+1))/(2) th ball is at some distance h from top of the tower. Find the value of h .

Two balls of equal size are dropped from the same height from the roof of a building . One ball has twice the mass of the other. When the balls the ground, how do the kinetic energies of the two balls compare ?

The balls are released from the top of a tower of height H at regular interval of time. When first ball reaches at the ground, the n^(th) ball is to be just released and ((n+1)/(2))^(th) ball is at same distance 'h' from top of the tower. The value of h is

Using the (r+1)^(th) term, find the 3rd,4th and 5th terms in the expansion of (3x+2y)^8

If water drops are falling at regular time intervals from ceiling of height H, then position of drop from the ceiling is (when n^(th) drop falling from the ceiling and r^(th) drop is in its way)