Question

give reason for the following a man falling from the height receives injury when he fall on cement floor rather than when he fall on the heap of sand

Answer 1

When a man falls on a hard cemented floor his momentum reduced to zero in a very short time and hurt the man. Whereas when a man falls on a heap of sand. As sand can compress, it takes longer time for the man to hit the ground (or hard surface). Due to longer time, it reduces the man’s momentum gently and hence the man either will not get hurt or may get less injury.



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Answer 2

when he fell on the cement he applied force on the cement and an equal amount of force is applied by the cemented floor that is why the man get hurt but when he fell on the sand the force the is applied by the man is absorbed by the sand