Science Test - Chapter 14

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Science Test - Chapter 14
2014-12-16 20:55:15
science Grade
asls chapter 14 science
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  1. the speed and direction of a moving object
  2. How fast an objects position changes with time at any given moment.
  3. The force of gravity between Earth and an object
  4. Forces that cancel each other out when acting together on a single object.
    balanced forces
  5. Change in velocity with respect to time
  6. A push or pull exerted by one object on another, causing a change in motion
  7. the tendency of a moving object to keep moving in a straight line or of any object to resist a change in motion.
  8. A force that opposes the motion of one object moving past another
  9. the force of attraction between any two objects due to their mass.
  10. the force one object applies to a second, as in newtons' third law of motion, which states, "for every action, there is an equal but opposite reaction.
  11. Newton's First law of motion states:
    Objects at rest remain at rest and objects traveling at a steady rate in a straight line continue that way until a force acts on them.
  12. Newton's second law of motion states:
    when an unbalanced force acts on an object, the object's acceleration equals the force divided by the object's mass
  13. Newton's third law of motion states:
    For every action, there is an equal an opposite reaction.
  14. Newton's Law of Gravitation states:
    The force of gravity between two objects increases with the mass of the objects and decreases with the distance between them squared
  15. Define acceleration
    a change in velocity
  16. Define deceleration
    occurs when a force causes the speed of an object to decrease
  17. define velocity
    the speed and direction of a moving object
  18. Know how to use the formula a = F / m

    Kyle pushes a rock that weighs 5 kg (mass) with a force of of 15 N (force).  How much acceleration will the rock have?
    3 meters per second each second
  19. how do velocity and speed differ?
    Velocity includes the direction and speed is only how fast it changes position
  20. what are the ways in which an object can change acceleration?
    when velocity changes acceleration changes.  when a force causes the speed to decrease, it is called deceleration.