Question

A boy can throw a stone up to a maximum height of $10m$. The maximum horizontal distance up to which the boy can throw the same stone up to will be

• A. $20\sqrt{2}m$
• B. 10 m
• C. $10\sqrt{2}$
• D. 20 m

Answer 1

The correct option is D 20 m

Given,

$H=10m$

The maximum height in the projectile motion is given by

$H=\frac{u^2}{2g}$. . . . . . . . .(1)

The maximum horizontal distance,

$R=\frac{u^2}{g}$. . . . . . . .(2)

From equation (1) and equation (2), we get

$R=2H$

$R=2\times 10$

$R=20m$

The correct option is D.