A rock is dropped from a vertical cliff. The rock takes 3.00 s to reach the ground below the cliff. A second rock is thrown vertically from the cliff. It takes 2.00 s to reach the ground below the cliff from the time it is released. With what velocity was the second rock released?

O 5.51 m/s downward 

O 12.3 m/s upward 

4.76 m/s downward 

4.76 m/s upward 

12.3 m/s downward