Asolid metal ball and a hollow plastic ball of the same external radius are released from rest in a large vacuum chamber. when each has fallen 1 m they both have the same

a, speed.
b, momentum.
c, kinetic energy.
d, inertia.
e, change in potential energy.

Could someone . i have tried to solve myself but my calculation is off

Could someone me find the answer to this problem.

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.