Across
- 2. simply a push or a pull
- 4. the energy of motion, described by the relationship KE= mv2
- 8. the time rate of work: power= worktime
- 9. objects collide without permanent deformation or generation of heat
- 13. colliding objects become tangled or coupled together, generating heat
- 15. the scientific unit of force
- 17. the product of force and contact time
- 19. a combination of all the forces that act on an object
Down
- 1. quantity describing both speed and direction
- 3. distance traveled divided by the time interval during which the motion occurred
- 5. the speed at any instant of time
- 6. the SI unit of energy and work, equivalent to a newton-meter
- 7. the stored energy that a body possesses because of its position
- 10. the rate at which velocity changes with time
- 11. inertia in motion, defined as the product of mass and velocity
- 12. when objects collide in the absence of external forces
- 14. the force that supports an object on a surface against gravity
- 16. the property of a system that enables it to do work
- 18. the product of the force and the distance through which the force moves W=Fd