Across
- 5. - a bar that pivots about one point and is used to move an object at a second point by a force applied at a third
- 7. - moving energy
- 8. - product of the force and the distance over which the force is applied
- 11. - stored energy
- 13. - the path a flying projectile follows
- 15. - a device in which accumulated tension is suddenly released to hurl an object some distance
- 16. - a measure of the rate of doing work
- 17. - a weight that balances another weight
- 20. - type of catapult that works by dropping a weight that is attached to the end of a lever-arm
- 22. - twisted rope used in catapults to store tension
- 25. - the twisting of an object by turning one end while the other is held in place or turned in the opposite direction
Down
- 1. - to push something suddenly or hard
- 2. - the point on which a lever rests or turns
- 3. - a turning or twisting force
- 4. - the resistance that one surface or object encounters when moving over another
- 6. - is the rate at which work is performed
- 9. - the influence that produces a change / mass multiplied by acceleration
- 10. - the rate of change of velocity of an object
- 11. - something that is shot or fired from a weapon
- 12. - a weight or mass that is supported or carried
- 14. - a basic type of catapult that works by using torsion
- 18. - a small device that releases a spring or catch and sets off a mechanism
- 19. - the property of a body that causes it to have weight in a gravitational field
- 21. - a high powered crossbow that hurled projectiles long distances
- 23. - a powerful machine with one or more drums on which to coil a rope, cable, or chain for hauling or hoisting
- 24. - drive, push, or cause to move in a particular direction, typically forward
- 25. - the pulling force exerted by each end of a string, cable, or similar object