Answer:
The rock will strike with a speed of 21.68 m/s.
Explanation:
It is given that, a person drops a rock for me bridge to the water 24 m below. We need to find the speed with the rock strike the water. It will move under the action of gravity. So, the speed of the rock is given by :
[tex]v=\sqrt{2gh} \\\\v=\sqrt{2\times 9.8\times 24} \\\\v=21.68\ m/s[/tex]
So, the rock will strike with a speed of 21.68 m/s.
