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41 Cards in this Set
- Front
- Back
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What is a force?
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It is a push or pull that can cause a change in the motion of an object.
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What is impulse?
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It is the product of the amount of force on an object and the time during which the force is applied.
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What does the impulse-momentum theorem state?
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It states that an impulse causes a change in momentum.
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What kind of relationship do values when they are inversely proportional?
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They have a relationship in which one value increases while the other decreases.
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What is an isolated system?
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It is a collection of matter that doesn't interact with anything else in the universe.
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What is mass?
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It is the quantity of matter in an object?
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What is momentum?
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It is the product of mass and velocity.
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What does Newton's Third Law of Motion state?
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It states that when an object exerts a force on a second object, the second object exerts back on the first that is equal to, and opposite in direction from, the original force.
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What does rebound mean?
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It means to bounce off.
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What is a vector?
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It is a quantity that has both magnitude and direction.
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What is velocity?
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It is an object's displacement divided by the time it takes to move that amount.
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What is a compound machine?
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It is two more simple machines combined into a single device.
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What is efficiency?
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It is the ratio of a machine's output work to its input work, expressed as a percentage.
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What is horsepower?
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It is power equivalent to that of one horse, or 746 watts.
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What is an inclined plane?
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It is a flat surface, at an angle to the horizontal.
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What is input force?
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It is the force applied to the machine by its user.
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What is a lever?
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It is a bar, beam, or road that pivots around a fixed position.
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What is mechanical advantage?
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It is the ratio of a machine's output force to its input force.
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What is output force?
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It is the force applied by the machine.
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What is a pulley?
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It is a wheel with a grooved edge for holding a rope, a chain, or a cable.
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What is a scalar?
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It is a quantity that has a magnitude but no direction.
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What is a screw?
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It is an inclined plane wrapped around a cylindrical post.
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What is a watt?
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It is the standard unit of power, equivalent to doing one Joule of work each second.
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What is weight?
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It is the force of gravity acting on an object.
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What is a wheel and axle?
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It is a lever that rotates around a center point, or fulcrum.
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What is work?
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It is the product of a force on an object and the object's resulting displacement.
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What is chemical energy?
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It is energy stored in the bonds between atoms in molecules.
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What is a conservative force?
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It is a force whose effects are the same regardless of the path the object takes.
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What is electrical energy?
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It is energy that can be carried by moving electrons in an electric conductor.
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What is energy?
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It is the capacity to do work.
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What is kinetic energy?
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It is energy an object possesses because of its motion.
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What does the Law of Conservation of Energy state?
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It states that energy cannot be created or destroyed, though it may be transformed from one form to another.
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What does the Law of Conservation of Momentum state?
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It states that, in an isolated system, the total momentum before a collision equals the total momentum after a collision.
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What is mechanical energy?
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It is energy an object possesses because of its motion or position.
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What is a nonconservative force?
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It is a force whose effects depend on the path taken by the object.
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What is nuclear energy?
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It is energy released when the nuclei of atoms are changed.
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What is potential energy?
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It is stored energy that can be converted to other forms.
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What is radiant energy?
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It is energy that is released by atoms that absorb energy from an outside source.
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What is speed?
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It is the rate of change of distance?
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What is thermal energy?
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It is the energy of moving or vibrating molecules.
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What does the work-energy theorem state?
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It states that when a net force does work on an object, the object's kinetic energy changes.
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