Astro test 2

  1. Newton's First Law: Law of Inertia
    Objects will remain in motion, in a straight line and at a constant speed unless acted upon by a force
  2. Net force
    • any influence that may change the state of motion of objects
    • an unbalanced force
  3. Newton's 2nd Law: Law of forces and accelrations
    • if ourside net forces act upon objects, then objects are accelerated.
    • when this happens objects are accelerated in the direction of the net forces.
    • inversely proportional to objects inertia
  4. quantitive measurement of inertia
    objects mass
  5. mass
    total amount of material in an object
  6. acceleration
    • force/mass
    • force=mass * acceleration
  7. weight
    how gravity affects or accelerates mass.
  8. scalar quantity
    • remains the same no matter where you travel in the universe
    • MASS
  9. vector quantity
    • changes depending on where you are.
    • weight
  10. inertia
    the tendency of the object at rest to remain at rest. and of a body in motion in a straight line at a constant speed.
  11. Force
    push or pull anything that can cause a body to change velocity.
  12. velocity
    a physical quantity that indicates both the spped of a body and the direction in which it is moving.
  13. Newston's 3rd Law: law of active-reactive forces
    • if an ovject exerts a net force upon another object (action), then the second object exerts a second net force upon the first object (reaction)
    • the two forces are equal in magnitude but opposite in direction.
    • f1=f2
  14. The relationship between acceleration and forces
    if an outside net force acts upon an object, the object is accelerated in the direction of the net force
  15. light
Card Set
Astro test 2
Astro Test 2