What provides the force that causes magma to erupt to the surface

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion

Contrast the force of gravity between these pairs of objects: 1-kg mass and a 2-kg mass that are 1 m apart; a 1-kg mass and a 2-kg mass that are 2 m apart; and two 2=kg masses that are 1 m apart. i dont understand.

Acar of mass 800kg is moving at a speed of 2.2m/s.