I with these 2 questions for physics (PE and KE questions)

[hayabuali3]

Homework Statement

1: Under what conditions will a 0.030-kg marble-Earth system and a 3.00-kg rock-Earth system have the same gravitational potential energy? Do not use the case where both objects are at the reference level.

2: Under what conditions will a moving 0.030-kg marble and a moving 3.00-kg rock have the same translational kinetic energy? Do not use the case where both objects are stationary.

Relevant Equations

im not sure

i don't know how

 

[Gaussian97]

What is the meaning of potential energy? And kinetic energy?

 

[PeroK]

Homework Statement:: 1: Under what conditions will a 0.030-kg marble-Earth system and a 3.00-kg rock-Earth system have the same gravitational potential energy? Do not use the case where both objects are at the reference level.

2: Under what conditions will a moving 0.030-kg marble and a moving 3.00-kg rock have the same translational kinetic energy? Do not use the case where both objects are stationary.
Relevant Equations:: I am not sure

i don't know how

You must make your best attempt at solving these problems. See the homework guidelines:

https://www.physicsforums.com/threads/homework-help-guidelines-for-students-and-helpers.686783/

However, if you really have no idea, then you should study the relevant course material before attempting the problems.