Across
- 4. States that in a closed, isolated system, energy is not created or destroyed, but rather, is conserved.
- 5. Kinetic energy of a system due to its rotational motion, proportional to the system's moment of inertia and the square of its angular velocity.
- 6. A device that makes work easier (but does not change the amount of work) by changing the magnitude or the direction of the force exerted to do work.
- 7. The product of a rotating object's moment of inertia and its angular velocity; measured in kg m^2/s
- 11. The energy of a system that is associated with its motion.
- 12. A type of collision in which the kinetic energy after the collision is less than the kinetic energy before the collision.
- 13. The rate at which energy is transformed.
- 17. For an ideal machine, is equal to the displacement of the effort force divided by displacement of the resistance force.
- 19. Stored energy due to the interactions between objects in a system.
- 20. The stored energy in a system resulting from the gravitational force between objects; represented by the symbol GPE.
- 21. States that the impulse on an object equals the object's final momentum minus the object's initial momentum.
- 24. The sum of kinetic energy and potential energy of the objects in a system.
- 27. States that the momentum of any closed, isolated system does not change.
- 29. The product of the average net force on an object and the time interval over which the force acts.
- 30. The ratio of resistance force to effort force
- 31. A machine consisting of two or more simple machines that are connected so that the resistance force of one machine becomes the effort force of the second machine.
- 32. Stored energy due to an object's change in shape.
Down
- 1. A type of collision in which the kinetic energy before and after the collision remains the same.
- 2. States that when work is done on a system, a change in energy occurs.
- 3. States that the angular impulse on an object is equal to the change in the object's angular momentum.
- 8. The energy of a system due to the system's change in position.
- 9. States that if there are no net external torques on a closed system, then its angular momentum is conserved.
- 10. The force exerted by a machine.
- 12. A closed system on which the net external force is zero.
- 14. The ability of a system to produce a change in itself or in the world around it; represented by the symbol E.
- 15. Unit of power; 1 J of energy transferred in 1 s.
- 16. A system that does not gain or lose mass.
- 18. The force a user exerts on a machine.
- 22. The ratio of output work to input work.
- 23. The position where gravitational potential energy is defined as zero.
- 25. The product of the object's mass and the object's velocity; measure in kg m/s.
- 26. the transfer of energy that occurs when a force is applied through a distance; equal to the product of the system's displacement and the force applied to the system in the direction of displacement.
- 28. The sum of the kinetic energies and potential energies of the particles in a system.