Case a: a "happy ball" collides with the floor moving at 2 m/s and rebounds upward at 1 m/s.
case b: a "sad ball" with the same mass collides the floor moving at 2 m/s and stops.
the collision time is the same for each case.

which variable is different for these two cases?
which case involves the greatest momentum change? the greatest impulse? the greatest force?

How do the measurements of charge at the different locations on the sphere compare to each other? the charge measurements are different at all locations on the sphere. the charge measurements are virtually not the same at all locations on the sphere except for the charge at the very top and at the very bottom that are equal. the charge measurements are virtually the same at all locations on the sphere except for the charge at the very top. at the top, the conductive sphere has a small disk that is made of different material. the charge measurements are the same at all locations on the sphere. what happens to the charge on the conductive sphere when it is connected to a source of charge such as the electrostatic voltage source? nothing will happen because no charge goes around the surface of the sphere. the charge on the conductive sphere spreads out over the surface of the sphere; being greater in some specific locations on the sphere. the charge on the conductive sphere spreads out uniformly over the surface of the sphere. the charge on the conductive sphere spreads out non-uniformly over the surface of the sphere.

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

Where do magnetic lines of force enter earth?