A stone is dropped from a rising balloon at a height of above the ground and reaches the ground in . What was the velocity of the balloon when the stone was dropped? Take .
upward
downward
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Let be points on a vertical line such that . If a body is released from position , the times of descent through and are in the ratio.
and
Water drops fall at regular intervals from a tab which is above the ground. After how many seconds does the first drop reach the ground?
If two balls of masses and are dropped from the same height, then the ratio of the time taken by them to reach the ground will be
A boy standing at the top of a tower of height drops a stone. Assuming , the velocity with which it hits the ground is
What will be the ratio of the distances moved by a freely falling body from rest on 4th and 5th seconds of journey?
A ball released from a height falls in one second. In 4 seconds it falls through
From a balloon moving upwards with a velocity of 12 , a packet is released when it is at a height of from the ground. Time taken by it to reach the ground is ( )
on solving we get,
A ball dropped from a point falls down vertically to , through the midpoint . The descending time from to and that from to are in the ratio
For to
A ball is dropped from the top of a tower of height and at the same time another ball is projected vertically upwards from ground with a velocity . Then the distance from the top of the tower, at which the two balls meet is
Dividing (i) by (ii) we get
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