1) A non-contact force that pulls charged objects toward each other. a) Electrostatic attraction b) Electrostatic repulsion 2) A non-contact force that pushes charged objects away from each other a) Electrostatic attraction b) Electrostatic repulsion 3) Like charges a) b) 4) Unlike charges a) b) 5) Like charges a) Attract b) Repel 6) Unlike charges a) Attract b) Repel 7) The ability to do work (eg move an object) a) Force b) Energy 8) Energy stored in an object when it is deformed (stretched, compressed or twisted). a) Elastic potential energy b) Kinetic energy 9) Energy of an object in motion a) Elastic potential energy b) Kinetic energy 10) True or false: Forces can add or remove energy from an object a) True b) False 11) A non-contact force that is the force of attraction that objects with mass exert on one another a) Gravitational force b) Electrostatic force 12) The bigger the mass - the __________ gravitational force a) bigger b) smaller 13) The bigger the distance - the __________ gravitational force  a) bigger b) smaller 14) Why objects orbit other objects in space instead of moving off in a straight line a) Forward speed + inward pull b) Only inward pull c) Only forward speed 15) Forceweight = a) m x g b) m ÷ g 16) The amount of matter in an object a) Mass b) Weight 17) The amount of gravitational force acting on an object a) Mass b) Weight

Forces # 7 - Airplane

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