An aeroplane flying $490 \,m$ above ground level at $100\, m/s$, releases a block. How far on ground will it strike ......... $km$
An aeroplane flying $490 \,m$ above ground level at $100\, m/s$, releases a block. How far on ground will it strike ......... $km$
$0.1$
$1$
$2$
None
An aeroplane flying $490 \,m$ above ground level at $100\, m/s$, releases a block. How far on ground will it strike ......... $km$
$S = u \times \sqrt {\frac{{2h}}{g}} = 100 \times \sqrt {\frac{{2 \times 490}}{{9.8}}} = 1000\,m = 1\,km$
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