9. There is a distinction between average speed and the magnitude of average velocity. Give an example that illustrates the difference between these two quantities.

Explain how plate tectonics have changed earth’s surface over time. include the role of plate tectonics in the creation of landforms.

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Abookcase has a mass of 38 kg and the coefficient of friction between it and the floor is 0.82 what is the maximum force of friction between the bookcase and the floor a 372n b 305n c 412n d 449n