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Balanced & Unbalanced Forces 2

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This podcast is part of the series: Forces


Chris and David


Fairhope High

Baldwin County School District


This podcast is one in a series of podcasts designed to introduce and explain forces in our world.  This particular podcast teaches the difference between balanced and unbalanced forces including a demonstration of how to calculate each.  The students also show combined forces and how to calculate them.

Length: 03:34

Content Areas: Science

Alabama Course of Study Alignments and/or Professional Development Standard Alignments:

SC (9-12) Physical Science
7. Relate velocity, acceleration, and kinetic energy to mass, distance, force, and time.
  • Interpreting graphic representations of velocity versus time and distance versus time
  • Solving problems for velocity, acceleration, force, work, and power
  • Describing action and reaction forces, inertia, acceleration, momentum, and friction in terms of Newton's three laws of motion
  • Determining the resultant of collinear forces acting on a body
  • Example: solving problems involving the effect of a tailwind or headwind on an airplane
  • Solving problems for efficiency and mechanical advantage of simple machines
    SC (9-12) Physical Science
    12. Identify metric units for mass, distance, time, temperature, velocity, acceleration, density, force, energy, and power.
    SC2015 (9-12) Physical Science
    7. Analyze and interpret data for one- and two-dimensional motion applying basic concepts of distance, displacement, speed, velocity, and acceleration (e.g., velocity versus time graphs, displacement versus time graphs, acceleration versus time graphs).
    SC2015 (9-12) Physical Science
    8. Apply Newton's laws to predict the resulting motion of a system by constructing force diagrams that identify the external forces acting on the system, including friction (e.g., a book on a table, an object being pushed across a floor, an accelerating car).
    SC2015 (9-12) Physics
    1. Investigate and analyze, based on evidence obtained through observation or experimental design, the motion of an object using both graphical and mathematical models (e.g., creating or interpreting graphs of position, velocity, and acceleration versus time graphs for one- and two-dimensional motion; solving problems using kinematic equations for the case of constant acceleration) that may include descriptors such as position, distance traveled, displacement, speed, velocity, and acceleration.
    SC2015 (9-12) Physics
    2. Identify external forces in a system and apply Newton's laws graphically by using models such as free-body diagrams to explain how the motion of an object is affected, ranging from simple to complex, and including circular motion.
    a. Use mathematical computations to derive simple equations of motion for various systems using Newton's second law.
    b. Use mathematical computations to explain the nature of forces (e.g., tension, friction, normal) related to Newton's second and third laws.


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