Quiz on 10c Gravity, Fluid Motion, and Work
 1. Which of the following states that any two objects in the universe without exception, attract each other?A) Law of Universal GravitationB) Bernoulli's PrincipleC) Law of Conservation of Matter and EnergyD) Law of Conservation of Momentum2. The amount of gravitational pull between two objects depends on two things. What are they?A) mass and distance between the objectsB) density and mass of the the two objectsC) distance between the two objects and the amount of time it takes to get from one to the otherD) momentum and density between the two objects3. What is the formula for momentum?A) Momentum = distance divided by timeB) Momentum = mass times velocityC) Momentum = force times distanceD) Momentum = mass divided by density4. Which of the following states that the total momentum of the objects that interact does not change?A) Law of Universal GravitationB) Bernoulli's PrincipleC) Law of Conservation of MomentumD) Law of Conservation of Matter and Energy5. Which of the following is the upward force exerted by a fluid on a submerged object?A) momentumB) gravityC) buoyant forceD) density6. What is the formula for density?A) Density = force times distanceB) Density = mass times velocityC) Density = gravity x massD) Density = mass divided by volume7. Which of the following states that the pressure exerted by a moving stream of fluid is less than the pressure of the surrounding fluid?A) Law of Universal GravitationB) Bernoulli's PrincipleC) Law of Conservation of MomentumD) Law of Conservation of Matter and Energy8. Which of the following terms describes using a force to move an object a distance, when both the force and the motion of the object are in the same direction?A) MomentumB) WorkC) DensityD) Buoyancy9. It is possible to do work, but have no motion.A) FalseB) True10. Is work being done: A mother carries her baby from room to room.A) YesB) No11. What is the SI unit of work?A) kgxm/s2B) JouleC) Meter-NewtonD) Newton12. If a woman pushes a pile of cardboard 10 meters with a force of 2 N, how much work has she done?A) 20 NB) 5 kgxm/s2C) 20 JD) 5 J
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Answer Key

1.A   2.A   3.B   4.C   5.C   6.D   7.B   8.B   9.A   10.B   11.B   12.C

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