Across
- 2. Class The lever category where the effort is applied between the fulcrum and the resistance
- 4. The amount of matter in an object
- 6. The unit of speed for an object moving at the speed of sound
- 7. The planet where the surface gravity is approximately thirty eight percent of Earths gravity
- 10. The energy that comes from the movement of atoms and molecules in a substance
- 14. Pulley A simple machine that only changes the direction of a force but has a mechanical advantage of one
- 17. The sum of an object's kinetic and potential energy
- 20. The measure of the force of gravity on an object
- 22. Energy delivered by tiny charged particles called electrons moving through a wire
- 25. Energy that travels in waves such as visible light or xrays
- 26. The property of a body to resist changes in its state of motion
- 28. The name of the center seeking force that keeps an object moving in a circular path
- 30. The SI unit for work or energy
- 32. Friction The resistive force between two surfaces moving past each other
- 33. The energy of an object due to its motion
- 34. A quantity that has magnitude but no direction
- 36. Mechanical Advantage The ratio of the effort arm length to the resistance arm length in a lever
- 38. The state of motion where gravity is the only force acting on an object
- 39. Class The lever category where the fulcrum is located between the effort and the resistance
Down
- 1. Velocity The maximum constant speed reached by a falling object when air resistance equals weight
- 3. A vector quantity referring to an object's overall change in position
- 5. The unit representing one joule of work performed per second
- 8. The rate at which an object covers distance
- 9. Stored energy or energy of position
- 11. Energy stored in the bonds of atoms and molecules
- 12. A scalar quantity referring to how much ground an object has covered
- 13. Energy stored in the nucleus of an atom
- 15. The ratio of work output to work input often expressed as a percentage
- 16. The physical quantity defined as the work done divided by the time interval
- 18. Friction The force that must be overcome to start a stationary object moving
- 19. A quantity that has both magnitude and direction
- 21. The force that attracts a body toward any other physical body having mass
- 23. The type of work done when the applied force is in the opposite direction of motion
- 24. The orientation of force to displacement that results in zero work being done
- 25. The ability to do work
- 27. The condition of a system where the net force is zero and acceleration is zero
- 29. The apparent absence of weight experienced during free fall
- 31. The product of force and distance
- 35. Force The vector sum of all individual forces acting upon an object
- 37. The SI unit for force