Question

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

• A. 0.1 km
• B. 1 km
• C. 2 km
• D. None

Answer 1

The correct option is B

1 km

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