1) A change in an object’s position in respect to time and in comparison to other objects a) Acceleration b) Friction c) Motion d) Inertia 2) How fast an object’s position changes over time. a) Acceleration b) Speed c) Inertia d) Kinetic Energy 3) The force between two magnets or between a magnet and certain metals. a) Mechanical Force b) Electrostatic Force c) Magnetic Force d) Contact Force 4) The change in speed or direction of an object. a) Speed b) Inertia c) Motion d) Acceleration 5) A push or pull that one exerts on a system’s state of rest or uniform motion a) Magnetic Force b) Mechanical Force c) Electrostatic Force d) Balanced Force 6) A push or pull that causes an object to move, stop, or change direction. a) Force b) Motion c) Unbalanced Force d) Balanced Force 7) A force that occurs when one object touches another. a) Electrostatic Force b) Mechanical Force c) Contact Force  d) Force 8) A noncontact force that acts over a distance and pulls all objects towards each other. a) Magnetic Force b) Gravity c) Inertia d) Contact Force 9) A force that has to do with the charge an object carries. Opposite charges attract and same charges repel. a) Magnetic Force b) Contact Force c) Electrostatic Force d) Mechanical Force 10) The ability to do work or to change an object. Units are called joules (J). a) Force b) Inertia c) Motion d) Energy 11) Energy that is stored in the position or condition of an object. a) Balanced Force b) Potential Energy c) Inertia d) Kinetic Energy 12) Forces that do not add up to zero. They change the motion of an object. a) Unbalanced Force b) Gravity c) Balanced Force d) Motion 13) Energy of motion. a) Electrostatic Force b) Potential Energy c) Kinetic Energy d) Force 14) The tendency of an object in motion to stay in motion or of an object at rest to stay at rest. a) Gravity b) Intertia c) Motion d) Potential Energy 15) A force that opposes the motion of one object moving past another. a) Inertia b) Motion c) Friction d) Unbalanced Force 16) Forces that act on an object without changing its motion. These forces often point in opposite directions and always add up to zero. a) Magnetic Force b) Unbalanced Force c) Contact Force d) Balanced Force 17) Distance ÷ Time a) Speed b) Acceleration 18) Change in speed ÷ Time a) Acceleration b) Speed 19) F = Mass x Acceleration a) True b) False 20) If you drive for 2 hours, what else do you need to know in order to find your speed? a) Mass b) Distance c) Acceleration  21) Adding salt to the road increases friction a) True b) False 22) What kind of energy does a pulled back slingshot have? a) Potential Energy b) Kinetic Energy 23) An object in motion stays in motion, an object at rest stays at rest a) Newton's Second Law b) Newton's First Law c) Newton's Third Law 24) Force equals mass times acceleration a) Newton's Third Law b) Newton's First Law c) Newton's Second Law 25) For every action there is an equal and opposite reaction  a) Newton's Third Law b) Newton's Second Law c) Newton's First Law

Unit 9: Forces and Motion

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