Mass and force
Both depend on velocity; both depend on mass.
mass, velocity and radius
No, momentum and kinetic energy for all classical particles depend only on their mass and their velocity. Due to the fact that momentum and KE both depend on the same factors, they cannot be changed independently. Kinetic energy = 0.5mv2 Momentum = mv
By definition p=mv: momentum = mass * velocity (speed if you don't care about direction)
Both momentum and kinetic energy depend on mass and velocity.
Momentum doesn't depend on any forces. An object's momentum is the product of its mass and velocity, and can easily exist in the absence of any force. Of course, if any force should come along and act on the object, then its velocity would change, and its momentum in turn. But the momentum is still directly defined in terms of the mass and velocity, without regard for where that velocity came from.
Momentum is mass x velocity, so it would also depend on each ball's velocity.
Inertia can be described as momentum, which is a product of mass and velocity.
That would depend on their velocity (speed with direction), since the formula for momentum is momentum=Mass*Velocity. If they are moving at the same Velocity, the heavier of the two would have greater momentum.