A Steel marble with a mass of .020 Kg is fired at an angle of 45 degrees from the marble launcher. If the acceleration of the marble is 5.6 m/s2, What was the force in Newton's applied to the marble?

Answer(a)   the matererials that are in contact, the two materials and the nature of their surfaces/// (b)/// the force pushing the two surfaces together, pushing the surfaces together causes the more of the asperities to come together and increases the surface area in contact with each other

Answerthe distance between the two ends of the galaxy is 150,000 light years;