## Chapter 4: Causes of Motion

 Describe Newton's Laws and their applications to motion. Given F=ma, calculate the motion of an object If a 5 kg object is acted upon by a force of 20 N, what is its acceleration? If it starts from rest, what will be its speed after 3 seconds? What is the difference between mass and weight? If and object has a mass of 2 kg, what is its weight under normal Earth gravity? If a crate weighs 120 pounds, what is its mass? Describe static and kinetic friction and their applications If the coefficient of static friction of a surface is 0.5 and the coefficient of kinetic friction is 0.4, then how much force will be required to set in motion a 40 kg crate? How much force will be required to keep it going at a constant velocity a after starting? If a large truck and a Volkswagen collide, which is acted upon by the larger force? If more than one force acts on an object, how do you predict its motion from Newton's second law? If a 10 kg object falls in the Earth's gravity but is acted upon by a 40 N air resistance force, what will be its acceleration? *Motion Concepts *Newton's Laws *F = ma *Mass and Weight *Elevator Problem *Application of F=ma *Motion calculation *Weight calculation *Friction *Force to overcome friction *Newton's 3rd Law *Combinations of forces
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## Chapter 5: Circular Motion

Does motion in a circle at a constant speed involve an acceleration?

What is the difference between centrifugal force and centripetal force? Which can you measure with a scale?

Calculate the centripetal force on an object moving in a curved path, given the mass, velocity, and radius of curvature of the path.

If a Ferris wheel ride has a diameter of 20 meters and a speed of 8 m/s, what is the centripetal acceleration of a rider? What is the centripetal force on a 70 kg rider? Why do you feel lighter at the top of the ride and heavier at the bottom?

How does the force of gravity change with distance?

If an object weighs 600 N at the Earth's surface, what will it weigh twice as far out from the Earth's center? ...three times as far out?

What causes the tides? Why are there two per day instead of just one?

*Centripetal acceleration

*Vector velocities

*Centripetal force calculation

*Law of gravity

*Inverse square law

*Circular orbit

*Gravity in orbit

*Tides

*Sun Tide

*Jupiter effect

*Syncom satellites

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## Chapter 8: Rotational Motion

What is torque? How can you increase the torque on a wrench to turn a stubborn bolt?

What is required for equilibrium of a large object?

Why do you pick up a long board at it's center? Why is it difficult to lift it by one end alone?

Why does a skater spin faster if they pull their legs and arms in?

What is the difference between centrifugal force and centripetal force? Which can you measure with a scale?

*Torque

*Equilibrium

*Force combination

*Lifting example

*Conservation of angular momentum

*Centripetal force

*Centrifugal force

*Coriolis force

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## Chapter 9: Fluids

 Define pressure - how does it differ from force? If the same force is applied to twice the area, what happens to the pressure? If the pressure of the atmosphere is about 15 pounds per square inch, and the top of your car is about 50 inches by 50 inches, what total force is exerted on the top of your car by the atmosphere? Why doesn't it crush the car top in? How do you find the pressure at a depth in a fluid? If you dive to a depth of 10 meters, how much additional pressure is exerted upon you? What is Pascal's Principle? What is a hydraulic press and what is it good for? How is Pascal's Principle used in the hydraulic press? Can a hydraulic press multiply force? Can it cause something to move further than the force which is applied to the press? Can it do both at the same time? What is the Bernoulli Principle? Is there really such a thing as a curveball pitch in baseball, or is it an optical illusion? How can the Bernoulli Principle cause a ball to curve? What is Archimedes' Principle? What was the basis for Archimedes' conclusion that the king's crown was not made out of solid gold? How can you make use of the buoyant force on an object to determine its density? If your heart were not pumping enough blood through an artery to supply your body's needs, what could be changed to increase the flowrate? If you could increase the blood pressure by 10%, or increase the radius of the artery by 10%, which would be more effective in increasing blood flow? If an artery started to expand because its wall was too weak to withstand the internal blood pressure, would that expansion relieve the stress or tension of the artery wall? What is the origin of the force which pushes the mercury up in a barometer? What force pushes a liquid up a drinking straw? What force moves air into your lungs when you breathe? *Pressure definition *Atmospheric pressure *fluid pressure *Pascal's principle *hydraulic press *hydraulic brakes *auto lift *Bernoulli equation *Baseball curve *Archimedes' principle *buoyancy *Poiseuille's law *Blood pressure *LaPlace's law *barometer *Drinking through straw *Breathing pressure *Ideal gas law

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