A boy can throw a stone up to a maximum height of 10 m

• Kinematics

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

1. 10 m
2. 20√2 m
3. 20 m
4. 10√2 m

Answer

Maximum vertical height = u²/2g = 10 m

Horizontal range of a projectile = u² sin2θ/g

Range is maximum when θ = 45°

Maximum horizontal range = u²/g

Hence, maximum horizontal distance = 20 m

The correct option is C.