1. Which of the following has the most potential energy? A. a ball buried under the ground
B. a ball on the ground
C. a ball at the top of a mountain
D. a ball in a tree

What mass will a pumpkin have a force of 450 newton’s accelerates it to 110 m/s^2? include the correct units.

If a sphere and a cure have the same mass and are propelled up a ramp with the same force, which would travel father up the ramp? explain.

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.