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The Wood Apple, otherwise known as Vilambazham in Tamil is a fruit that is round to oval, 2 to 5 in (5-12.5 cm) wide, with a hard, woody, grayish-white, scurfy rind about 1/4 in (6 mm) thick.
To put things into perspective, this thing disguised as a fruit is as hard as a hockey ball. But wait, no one knows how hard the ball of our national game is. Proud to be Indian. Anyway, it's as hard as... um... a hockey ball people, come on! Point I'm trying to make is, it can hurt quite a bit, if it hits you at a decent speed. Now, assume this thing fell from a tree from a stationary position. (yes, it got detached from it's branch, or whatever)
Height of tree(h) = 12 feet
Initial velocity (u) = 0 feet/second
Acceleration due to gravity(g) = 32 feet/sec^2
Hence, by the fomula v^2 = u^2 + 2gh, we get, final velocity of the falling fruit as approximately 28 feet/sec. At that speed, a hockey ball hitting your head, can leave a good sized lump. And wipe away a few memory cells here and there. You know, you'll know your name starts with A and ends with D but the letters in between would've been erased. A wood apple hitting you right at the top of your head, at that same speed, in a cycle parking lot, with no one else around, could make you unconscious. In which state you would stay for a while cos no one's around. And therefore eventually, you MIGHT have put your mortality to test.
The Wood Apple missed me by 2 inches. I brought it along with me. Newton's apple taught him gravity. The Wood Apple taught me the gravity of life.
Feeling line, I know :)