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Physics Jeopardy! Vocabulary Newton’s Laws of Motion The rate at which velocity changes (Acceleration) Friction Falling Objects A force that opposes the motion of objects that are not moving (Static Friction) An attracting force that acts between any two masses… (Gravity) A push or pull that acts on an object (Force) Every action has an equal and opposite reaction (Newton’s 3rd Law) When you push a book across a table, it doesn’t go flying through the air because of gravity and… (Sliding Friction) The amount of matter in an object (Mass) The tendency of an object to resist a change in its motion (Inertia) If you want to lower the friction, you can change it into the lowest form of friction, which is… (Rolling Friction) The force of gravity acting on an object (Weight) Acceleration equals… (Net force / Mass) This type of friction opposes the motion of objects through liquids and gases (Fluid Friction) The overall force acting on an object after all the forces are combined (Net force) An object at rest tends to stay at rest, while an object in motion tends to stay in motion, unless some outside force acts on it (Newton’s 1st Law) You must apply more force to move an object with greater mass. If you apply equal force to two objects, the one with greater mass will This type of friction, with the help of gravity, keeps heavy objects from moving when you push them (Static Friction) The curved motion of a thrown object resulting from its initial forward velocity and the downward vertical force of gravity (Projectile Motion) The product of an object’s mass and velocity; having a lot of this makes an object difficult to stop (Momentum) The constant speed and direction of a falling object when the force of air resistance equals the force of gravity (Terminal Velocity) Newton’s Law of Universal Gravitation states that the greater the mass of an object, the greater its… (Gravitational Force / Gravity) Newton’s Law of Universal Gravitation states that that farther away the object being attracted, the (greater OR lower) Another word for movement (Motion) The speed and direction an object is moving (Velocity) This type of fluid friction increases with speed and surface area of the moving object (Air Resistance) Simple Machines A ramp is an example of an… (inclined plane) A flag pole rope system is an example of… (pulley) Energy Conversions Wind up toy (Potential Mechanical to Kinetic Mechanical) Battery (chemical to electrical) A door knob is an example of… (wheel & axle) A person walking (chemical to kinetic mechanical) An axe is an example of… (wedge) Turning on the lights (Electric to Electromagnetic and Thermal) A broom is an example of… (lever) Lighting a match (Chemical to Kinetic to Thermal and Electromagnetic) A jar lid is an example of… (screw) Nuclear Reactor (mechanical to nuclear to electric) accelerate less (Newton’s 2ndLaw) its gravitational force