SELECT * FROM question_mgmt as q WHERE id=4251 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=8 AND subId=16 AND chapterId=192 and ex_no='11' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)
A stone is dropped from the top of a tower 500 m high into a pond of water at the base of the tower. When is the splash heard at the top? Given, g = 10 m s-2 and speed of sound = 340 m s-1.
Height of the tower, s = 500 m
Velocity of sound, v = 340 m/s
Acceleration due to gravity, g = 10 m/s2
Initial velocity of the stone, u = 0
Time taken by the stone to fall to the base of the tower, t1
According to the second equation of motion:
Hence , the splash is heard at the top after time, t
Where, t = t1 + t2 = 10 + 1.47 = 11.47 s
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