An aeroplane flying 490 m above ground level at 100 m/s, releases a block. How far on ground will it strike

0.1 km

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1 km

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2 km

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None

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Solution

The correct option is B
1 km

$S = u \times \sqrt{\frac{2 h}{g}} = 100 \times \sqrt{\frac{2 \times 490}{9.8}} = 1000 m = 1 k m$

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An aeroplane flying 490 m above ground level at 100 m/s, releases a block. How far on ground will it strike

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