Across
- 1. force, The force that supports an object against gravity, often called the normal force.
- 4. energy, theorem The net work done on an object equals the change in kinetic energy of the object
- 7. rule The vector sum of forces acting on an; object that is not accelerating equals zero: ΣF = 0
- 11. energy, The energy that matter possesses due to its position.
- 12. The quantity of space an object occupies
- 13. speed, The speed that a projectile, space probe, or similar object must reach to escape the gravitational influence of Earth or of another celestial body to which it is attracted.
- 16. resistance, The force of friction acting on an object due: to its motion in air.
- 21. A simple machine consisting of a rigid rod pivoted at a fixed point called the fulcrum.
- 22. collision, A collision in which the colliding objects become distorted, generate heat, and may even stick together.
- 24. The speed of an object and specification of its direction of motion.
- 25. time, The time that one’s feet are off the ground during a vertical jump.
- 27. Inertia in motion, given by the product of the mass of an object and its velocity.
- 28. The property of a system that enables it to do work.
- 29. The quantity of matter in an object. More specifically, a measure of the inertia (or sluggishness) that an object
- 31. The rate at which velocity changes with time;the change in velocity may be in magnitude or direction or both, and it is usually measured in units of m/s2.
Down
- 2. of impulse and momentum, Impulse is equal to the change in the momentum of an object that the impulse acts on.
- 3. The product of the force and the distance moved by the force.
- 5. fall, Falling under the influence of gravity alone—falling without air resistance.
- 6. The force upon an object due to gravity. More specifically, the force with which a body presses against a supporting surface.
- 8. A device, such as a lever or pulley, that increases(or decreases) a force or simply changes the direction of a force
- 9. cell, A device that converts the chemical energy from a; fuel into electricity through a chemical reaction with oxygen or another oxidizing agent
- 10. The product of the force acting on an object; and the time during which; that force acts on that
- 12. quantity, A quantity whose description requires both magnitude and direction.
- 14. The curved path followed by a projectile under the influence of constant gravity only.
- 15. The unit of mass. One kilogram (kg) is the mass of 1 liter (L) of water at 4°C.
- 17. The property by which objects resist changes in motion.
- 18. The resistive force that opposes the motion or attempted motion of an object past another object with;which it is in contact, or through a fluid.
- 19. Simply stated, a push or a pull
- 20. force, The combination of all forces that act on an object.
- 23. The scientific unit of force
- 26. An arrow that represents the magnitude and direction of a quantity.
- 30. Distance traveled per unit time.