![]() ![]() the moon is closer to Earth.ħ ) An object with greater mass a. Using more physics and mathematics terms, weight is defined as the force with which a body is attracted to Earth or another celestial body, equal to the product of the objects mass and the acceleration of gravity: gravity mass x acceleration due to gravity, which is constant (Earth 9.8 m/sec2). the sun’s gravity is weaker than Earth’s. all of the aboveĦ ) The moon orbits Earth rather than the sun because a. 5000 Nĥ ) There is gravity between you and a. volumeĤ ) Jody has a mass of 50 kilograms. two of the aboveģ ) What does weight measure? a. acts between objects that are not touching. two of the aboveĢ ) Unlike friction, gravity a. rolling friction Multiple Choice Answers for MCQ worksheet – Frictionġ ) Gravity always causes objects to a. two of the aboveĦ ) Which type of friction occurs between a paddle and the water? a. It is weaker than static friction.ĥ ) A skydiver uses a parachute to a. It would be hard to ride a bike without it. The box has less friction when it is sliding.Ĥ ) Which statement about rolling friction is false? a. The box has no friction when it is stationary. rolling frictionģ ) Why is it easier to slide a heavy box over a floor than it is to start it sliding in the first place? a. two of the aboveģ ) If you pick up and carry a piece of heavy furniture, which type of friction do you have with the floor? a. force of weight pressing on the surfaces d. none of the aboveĢ ) Which factors affect friction? a. When weight is greater than lift, the plane descends. When the thrust is greater than the drag, the plane moves forward. To explain Newtons third law for gravitational forces. ![]() Drag is a force that acts against thrust and slows the airplane down. To relate gravitational force to the masses of objects and the distance between objects. Secondly, make a weighted string by tying a metal washer, or a screw nut, or a metal key to a light string. Lift is what pushes the airplane up, while gravity is the force that pulls the airplane down. First, tape a piece of paper in the middle of the coat hanger so that you can sketch vertical lines. Find the center of gravity of a coat hanger. chemical reactions take place when surfaces touch. The center of gravity is located at the intersection of the two lines. MCQ worksheet – Friction or frictional forceġ) Friction occurs because a. d Multiple Choice Answers for MCQ worksheet – Fundamentals of Force dħ) Which pair of forces in question 5 produces a net force of zero? a. If we add up all those tiny forces we get your total weight. If we break up your body into many many small chunks of equal mass we could calculate the tiny force of gravity on each one. none of the aboveĤ) In the following sketch, what is the net force acting on the box?ĥ) Which diagram represents balanced forces?Ħ) Which pair of forces in question 5 differ from each other in both strength and direction? a. Actually, the force of gravity acts on all of your mass in the same way, according to Newtons Universal Law of Gravitation down to every single molecule and atom. two of the aboveģ) If gravity pulls you down toward the center of Earth with a force of 500 N, how much upward force does the ground exert on you? a. all of the aboveĢ) Examples of forces include a. ![]()
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