Which of the following statements best describes friction? * 1 point A. It is a force that can not be seen B. It is a force that pulls the objects downward. C. It is the force that pulls the objects downward. D. It is an unseen force that slows down or stops. 2. The boat is sailing on the sea, slows down. What kind of friction is acting on it? * 1 point A. Static friction B. Rolling Friction C. Fluid friction D. Sliding friction 3. The force between the wheel or roller and the surface in which in contact with is _________. * 1 point A. Static friction B. Rolling Friction C. Fluid friction D. Sliding friction 4. Gravity is best described as the attractive force __________________. * 1 point A. that does not exist in space. B. that acts between any two objects. C. the acts between magnets and iron. D. that pulls a body towards a body toward the center of the earth. 5. _________ is the force of attraction between all mass in the universe, especially the attraction of Earth’s mass for bodies near its’ surface. * 1 point A. Frictional force B. Gravitational force C. Magnetic force D. Nuclear force
