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5. A delivery man uses wooden ramp when he delivers thus, packages do not slide off easily making his work take longer. What would be the best way to make the packages slide easily? A. make his wooden ramp wider C. use a sandpaper to polish and smoothen his ramp B. use water on his wooden ramp D. make his wooden ramp narrower 6. Friction is a force that acts in the direction of the intended motion of an object. A. Same B. opposite C. Parallel D. Northern 7. How much gravity an object has depends on its A. Weight B. Speed C. Momentum D. Mass 8. Air resistance on a flying airplane is an example of what type of friction? A. Sliding friction B. Fluid friction C. Rolling friction D. Static Friction 9. What effect does the Earth's gravity have on us? A. It helps us float. C. It moves around in circles. B. We are too small for it to affect us. D. It pulls us to the center of the Earth. 10. Which of the following objects exerts a gravitational force? A. a bowling ball B. a feather C. a book D. All of the above​