Answer:
Ganymede is the largest body
Explanation:
it is the satellite of jupiter
Chemical energy (calories) is converted by your body walking on the surface into mechanical/kinetic energy
Answer:
It will do nothing. The forces are balanced and the ball's motion will not change
Answer:

Explanation:
The change in kinetic energy will be simply the difference between the final and initial kinetic energies: 
We know that the formula for the kinetic energy for an object is:

where <em>m </em>is the mass of the object and <em>v</em> its velocity.
For our case then we have:

Which for our values is:
