Question

An aeroplane flying 490 m above ground level at 100 m/s, releases a block. It will strike the ground km far horizontally from the release point.

• A. 0.1
• B. 1
• C. 2
• D. 3

Answer 1

The correct option is B 1

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