astrophysics - What would the collision between a (large) solid planet and a gas giant be like?

Assuming a Jupiter-like planet and an Earth-like planet (Except, say... half the mass of Jupiter), what would happen when the two collide? For clarification: What would the actual collision be like?

Here on earth solids always just travel through gases "easily" (with some friction). Would the solid planet similarly just pass into the gas planet?

I assume there is some type of solid (or molten) core in Jupiter. Would the "real" collision be between the solid planet and the gas planet's core?

If the gas planet had no molten or solid core (all gas) would there be minimal changes to the solid planet?

Would the answer to this question change if both planets had Earth-like masses?

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Edit

This answer makes me imagine it would be like two liquid spheres colliding, would that be a correct view?