Imagine you push a book across an incredibly slippery surface. it slides right across because there is NO friction. Next, you push the same book across a rougher surface that exerts friction. Question:Will the velocity of the book change as it moves across the surface with NO friction?Explain your answer.

If there is applied force in the direction of the motion, and the magnitude of the applied force is more than the magnitude of the friction, the friction will cause the velocity to increase more slowly than it would otherwise.

Yes, it will change

hope this helps :)

Explanation:

Friction always acts to oppose any relative motion between surfaces. if we push on the book with a force of less than 5N, the book won't move, because the frictional force will exactly balance the force we apply. if we push with a 1 N force, a 1 N friction force opposes us.