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Apply scientific and engineering ideas to design, evaluate, and refine a device that minimizes the force on a macroscopic object during a collision.
Analyze data to support the claim that Newton’s second law of motion describes the mathematical relationship among the net force on a macroscopic object, its mass, and its acceleration.
Plan and conduct an investigation to provide evidence of the effects of balanced and unbalanced forces on the motion of an object.
Support an argument that the gravitational force exerted by Earth on objects is directed down.
Ask questions to determine cause and effect relationships of electric or magnetic interactions between two objects not in contact with each other.
Plan and conduct an investigation to provide evidence that
an electric current can produce a magnetic field and that a changing magnetic field can produce an electric current.
Make observations and/or measurements of an object’s motion to provide evidence that a pattern can be used to predict future motion.
Use mathematical representations of
Newton’s Law of Gravitation and Coulomb’s Law to describe and predict the gravitational and electrostatic forces between objects.
Construct an argument with evidence that in a particular habitat some organisms can survive well, some survive less well, and some cannot survive at all.
Plan and conduct an investigation to compare the effects of different strengths or different directions of pushes and pulls on the motion of an object.
Use mathematical representations to support the claim that
the total momentum of a system of objects is conserved when there is no net force on the system.
Define a simple design problem that can be solved by applying scientific ideas about magnets.*