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in Mathematics by (69.4k points)

From the top of a 64 metres high tower, a stone is thrown upwards vertically with the velocity of 48 m/s. The greatest height (in metres) attained by the stone, assuming the value of the gravitational acceleration g = 32 m/s2 , is :

(1)  128

(2)  88

(3)  112

(4)  100

1 Answer

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Best answer

Correct option (4)  100

Explanation:

At maximum height v = 0

Now v2 = u2 – 2gh

⇒ 0 = (48)2 – 2(32)h.

⇒ h = 36

Maximum height = 36 + 64 = 100 mt

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