College Ready Physics Standards
!!""####$$%%$$&&''$$(())** ++,,**--..//--&&0011((22))((33))--44 55&&66""""77&&11""&&11,,$$&&8899119933$$ Patricia Heller Physics Education Research Group Department of Curriculum and Instruction University of Minnesota Gay Stewart Department of Physics University of Arkansas STANDARD 3 Objective 3.1: Constant and NEWTON’S LAWS OF MOTION Changing Linear Motion (Grades 5-8 and 9-12) Students understand that linear motion Interactions of an object with other objects can be described, is characterized by speed, velocity, and explained, and predicted using the concept of forces, which can acceleration, and that velocity and cause a change in motion of one or both interacting objects. acceleration are vectors. Different types of interactions are identified by their defining characteristics. At the macro (human) scale, interactions are Objective 3.2: Forces and Changes in governed by Newton’s second and third laws of motion. Motion (Grades 5-8 and 9-12) Students understand that interactions Students understand that scientists believe that that the things and can be described in terms of forces. The events we observe occur in consistent patterns that are acceleration of an object is proportional comprehensible through careful, systematic investigations. To search to the vector sum of all the forces (net for consistent patterns in the multitude of interactions and changes we force) on the object and inversely observe, scientists classified different types of interactions, for example proportional to the object’s mass contact interactions, gravitational interactions, magnetic interactions, (a = ∑F/m). When two interacting objects and electrical (electrostatic) interactions. The defining characteristics push or pull on each other, the force on of an interaction are: (1) the conditions necessary for the interaction to one object is equal in magnitude but occur (e.g., two objects must be touching, one object must be charged, opposite in direction to the force on the one object must be a solid and the other a fluid, and so on); (2) the other object.
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