-Solve equations -Visualize the laws, recognize pictorial representations -Holt Physics Chapter 4 -Describe the velocity and acceleration of an object in free fall at different points in different scenarios (thrown upward, thrown downward, dropped from rest, etc.) -Know that in the absence of air resistance, all objects fall with the same acceleration, dependent upon the force of gravity (g = 9.8 m/s2 on Earth) -Draw free-body diagrams, and predict the forces necessary to bring an object into equilibrium -Define friction and describe its causes -Give examples of proportionality (direct & inverse), and relate to equations, including F = ma -Understand that in the presence of air resistance, a falling object has a frictional force acting in the opposite direction, and when that force equals the force of gravity, the object reaches terminal velocity -Understand the difference between the force of gravity (which is dependent upon the mass of the object) and the acceleration due to gravity (which is dependent only upon the planet’s mass) -Describe the relationship between tides and gravity

EQUATIONS F=ma v=v0+at x=x0+v0t+1/2at^2

KEY TERMS speed force weight vs. mass acceleration acceleration due to gravity inertia friction normal force

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Students know that when forces are balanced, no acceleration occurs; thus an object continues to move at a constant speed or stays at rest (Newton's first law).

Students know how to apply the law F = ma to solve one-dimensional motion problems that involve constant forces (Newton's second law).

Students know that when one object exerts a force on a second object, the second object always exerts a force of equal magnitude and in the opposite direction (Newton's third law).

Students know the relationship between the universal law of gravitation and the effect of gravity on an object at the surface of Earth.