A 1.00-kilogram mass was dropped from rest from a height of 25.0 meters above Earth’s surface. What is the velocity after the mass has fallen 12.5 meters?

245 m/s
245 m/s

-15.7 m/s
-15.7 m/s

-22.1 m/s
-22.1 m/s

0 m/s

Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?