The basketball has the greatest gravitational potential energy at its, highest which is at the very top.
Answer: 
Explanation:
Given
Length of the race track 
the radius of curvature of the track 
time taken to run on track is 
Speed of runner is

Centripetal acceleration is

Answer: The magnetic field lines go in directions that cannot combine to form a magnetic field between the two north poles.
Explanation: that was the answer for me I just took it on ape x
There are not enough electrons in atoms to affect the total mass, so the total mass is just the weight of the protons and neutrons.