Answer:
Stone 2
Explanation:
Let's call the height of the top of the cliff of H. The stone 1 was thrown downward with velocity v₀ and describes an accelerated movement. By the Torricelli's equation, the velocity that it strikes the water is
[tex]v_{max} = \sqrt{2gH}[/tex], where g is the gravity acceleration.
Stone 2 was thrown updown, so it will reach an height H' and then will follow on an accelerated moviment too, but now:
[tex]v'_{max} = \sqrt{2gH'}[/tex]
Because H'> H and vmax is directly proportional to H
v'max > vmax
