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.
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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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ALABAMA COURSE OF STUDY
Scientific and Engineering Practices:
- Asking questions (for science) and defining problems (for engineering)
- Developing and using models
- Planning and carrying out investigations
- Analyzing and interpreting data
- Using mathematics and computational thinking
- Constructing explanations (for science) and designing solutions (for engineering)
- Engaging in argument from evidence
- Obtaining, evaluating, and communicating information
- Cause and effect: mechanisms and explanation
- Scale, proportion, and quantity
- Systems and system models
Primary Learning Objective(s):
I can design and construct a balloon powered rocket to launch the greatest payload possible to the classroom ceiling.
When analyzing the forces acting on an object:
- I can draw and label a force diagram for the object
- I can recognize that balanced forces always result in constant velocity (including v = 0) and unbalanced forces always cause an acceleration in the same direction as the Fnet.
I can apply F=mg to calculate the gravitational force on an object with mass m in a gravitational field of strength g in the context of the effects of a net force on objects and systems.
I can predict the motion of an object subject to forces exerted by several objects using an application of Newton’s second law in a variety of physical situations with acceleration in one dimension.
I can construct explanations of physical situations involving the interaction of bodies using Newton’s third law and the representation of action-reaction pairs of forces.
Video Analysis Extension Activity:
I can re-express a free-body diagram representation into a mathematical representation and solve the mathematical representation for the acceleration of the object.