5. Which is true about mass and gravity? avity a. b. the lesser the mass of the object, the greater the pull of gravity C. the greater the mass of the object, the lesser the pull of gravity the greater the mass of the object, the greater the pull of gravity d. none of these, gravity and mass are not related 6. a . upward what is the direction of the frictional force that acts on an object moving to the left? b. downward C. to the right d. to the left also 7. Which of the following statements is not true about friction? a. it acts upward opposing the pull of gravity b. it prevents things from sliding off surfaces c. it keeps things that are in contact with each other d. it holds objects that are separated by great distance 8. Where is the gravitational force directed when you are holding a glass? a. upward b. downward C. into the glass d. away from the glass 9. If the mass of the Earth is doubled, how much increase would the weight of the objects on earth be? a. halved c. thrice b. doubled d. remains the same 10. A deliveryman uses a 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 b. use water on his wooden ramp c. use a sandpaper to polish and smoothen his ramp d. make his wooden ramp narrower B. Write True if the statement is correct and change the underlined word/s if it is wrong. 1. Gravity is a contact force that acts between two separate objects. 2. Gravity is the force exerted by the Earth which is equivalent to the mass of an object. 3. Gravity on the Moon is less than the gravity on the Earth. 4. Friction, unlike gravity, is a noncontact force. 5. Friction keeps objects from sliding off surfaces. 6. The principle of gravity was discovered by Sir Isaac Newton. 7. Friction is the force that opposes the push of gravity on objects. 8. The lesser the mass of an object, the greater the pull of gravity on it. 9. Gravity keeps anything from going up. 10. Gravitational pull between objects increases as the distance between them decreases