A stone is dropped from the top of a well of depth 39.2 m and a sound heared when it reached at the bottom surface after a time of 2.95 sec. Find the velocity of sound in air.`(g = 9.8 m//s^2)`

From what height should a stone be dropped so that the ratio of the distances traveled during the first and the last second of the fall is 1:9 ? Find the total time of its fall. [ g = 9.8 "m.s"^(-2) ].

A piece of stone is dropped from the top of a tower 90 m tall and at the same time another piece of stone is thrown upwards with a velocity of 30 "m.s"^(-1) from the base of the tower. When and where will the stone pieces meet?

A piece of stone is dropped from the top of a pillar. It travels the last h ft of the height in t s. Prove that the time of fall for the stone is ((t)/(2)+(h)/("gt")) s.

A stone is dropped from a tower 400m high. Simultaneously, another stone is thrown upwards from the earth's surface with a velocity of 100m/s. When and where would these two stones meet? (g= 9.8 m//s^(2)) .

A stone is dropped from the top of a tower 400 m high. At the same time another stone is thrown upwards from the ground with a velocity of 100 "m.s"^(-2) . When and where will they meet each other? [g = 9.8 "m.s"^(-2) ]