Physics Quicksheets - Newton's Laws

Card Set Information

Physics Quicksheets - Newton's Laws
2013-07-17 17:55:45
Physics Quicksheets Newton Laws

Kaplan Quicksheets Chapter 2
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user awc1990 on FreezingBlue Flashcards. What would you like to do?

  1. Newton's First Law:
    (Law of Intertia) a body in a state of motion or at rest will remain in that state unless acted upon by a net Force.
  2. Newton's Second Law:
    • when a net force is applied to a body of mass m, the body will be accelerated in the same direction as the force applied to the mass.
    • This is expressed by the formula F = ma 
    • (SI unit: Newton (N) = kg*m/s2
  3. Newton's Third Law:
    • If body A exerts a force on body B, then B will exert a force back onto A that is equal in magnitude, but opposite in direction.
    • This is expressed as, Fb = -Fa.
  4. Newton's Law of Gravity 
    All forms of matter experience an attractive force to other forms of matter in the universe. 

    • The magnitude of the force is represented by:

    Mass (m): a scalar quantity that measures a body's inertia.

    • Weight (W): a vector quantity that measures a body' gravitational attraction to the earth. 
    • W = mg
  5. Rotational Motion
    Rotational motion occurs when forces are applied against an object in such a way as to cause the object to rotate around a fixed pivot point, aka the fulcrum.

    Where, F is the magnitude of the force, r is the distance between the fulcrum and the point of force application, and θ is the angle between F and the lever arm.
  6. Free Falling Objects
    For a free falling object, the net external force is just the weight of the object:

    F = W

    Substituting into the second law equation gives:

    a = W / m = (m * g) / m = g

    The acceleration of the object equals the gravitational acceleration. The mass, size, and shape of the object are not a factor in describing the motion of the object. So all objects, regardless of size or shape or weight, free fall with the same acceleration.

What would you like to do?

Home > Flashcards > Print Preview