A larger water tank open at the top has small hole in the bottom when the water level is 30m above the bottom of the tank the speed of the water leaking from the hole is:

Explanation

The problem can be solved using Torricelli's Theorem, which states that the speed of efflux, v, of a fluid under the force of gravity through a small hole in a container is given by V = √(2gh), where g is the acceleration due to gravity (approximately 10 m/s²), and h is the height of the fluid above the hole. In this case, with g = 10 m/s² and h = 30 m, we calculate V = √(2×10×30) = 24.49 m/s, which approximates to 24 m/s.Option A (2.5 m/s) and Option C (4.44 m/s) are significantly lower than the correct value and result from incorrect calculations. Option D is incorrect because, according to Torricelli's Theorem, the speed does not depend on the hole's area, only the height of the water column.