Question

A cricketer can throw a ball to a maximum horizontal distance of $100m$. The speed with which he throws the ball is (to the nearest integer):

• A. $30m{s}^{-1}$
• B. $42m{s}^{-1}$
• C. $32m{s}^{-1}$
• D. $35m{s}^{-1}$

Answer 1

Answer: (C)

$32m{s}^{-1}$

Maximum horizontal range $=\frac{V^2}{g}=100$

So, $V=\sqrt{100\times g}=\sqrt{100\times 10}=31.62m/s\simeq 32m/s$