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- 1. Multiple ChoiceThe magnitude of the force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. This law is known as ____________.Universal Law of GravitationCoulombs lawCavendish LawKepler's Law
- 2. Multiple ChoiceYou have two objects with mass. If you double the mass of only one of the objects, how does that affect the magnitude of the gravitational force between them?It doubles its original magnitudeIt reduces it to a fourth of its original magnitude.It quadruples its original magnitudeIt reduces it to a half of its original magnitude.
- 3. Multiple ChoiceAccording to the Law of Universal Gravitation, how are force and distance related?The force is inversely proportional to distance squaredThe force is inversely proportional to distanceThe force is directly proportional to distanceThe force is directly proportional to distance squared
- 4. Multiple ChoiceIf the Earth suddenly lost half of its mass, what would happen to the gravitational force between it and the moon?The gravitational force would be cut in half.The gravitational force would be four times smallerThe gravitational force would double.The gravitational force would remain the same.
- 5. Multiple ChoiceHow does halving the distance between two objects affect the gravitational force between them?It quadruples its original magnitudeIt reduces it to a half of its original magnitude.It doubles its original magnitudeIt reduces it to a fourth of its original magnitude.
- 6. Multiple ChoiceWhich of the following helped calculate Earth’s mass?Cavendish’s ExperimentThe Inverse Square LawKepler’s First LawKepler’s Third Law
- 7. Multiple ChoiceWhat do Kepler's Laws explain?Planetary motionWeightlessnessTidesBlack holes
- 8. Multiple ChoiceTwo asteroids, each with a mass of 100,000kg and 500,000kg respectively, are separated by a distance of 4m. What is the gravitational force felt by each asteroid?0.208N0.220N0.198N0.214N
- 9. Multiple ChoiceTwo bowling balls, each with a mass of 5kg, are separated by a distance of 1m. What is the gravitational force felt by each bowling ball?1.67E-9 N2.22E-9 N1.12E-9 N1.59E-9 N
- 10. Multiple ChoiceHow does doubling the distance between two objects affect the force of gravitational attraction between them?It reduces it to a fourth of its original magnitude.It doubles its original magnitudeIt quadruples its original magnitudeIt reduces it to a half of its original magnitude.
- 11. Multiple ChoiceYour weight __________ as you move away from Earth’s center.DecreasesIncreasesBecomes zeroDoes not change
- 12. Multiple ChoiceIn circular motion, the centripetal force is always directed ________Towards the centerTangent to circular pathAway from the centerPerpendicular to the circular plane
- 13. Multiple Choice
Which of the following is the correct formula for centripetal acceleration?
- 14. Multiple ChoiceA 1200-kg car moving at 15m/s takes a turn in a circular path with a radius of 25.0 m. Determine the net force acting upon the car.10,800 N9 N450,000 N375 N
- 15. Multiple ChoiceA 1200 kg car moving at 15 m/s takes a turn around a circle with a radius of 25.0 m. Determine the centripetal acceleration acting upon the car.9 m/s²450000 m/s²375 m/s²108000 m/s²
- 16. Multiple ChoiceJohn flies his model plane in a circular motion by holding onto a string and swinging his plane around. The circular motion has a radius of 40 m, and the 8kg plane moves at 22 m/s. What is the tensional force John feels from the string?96.8 N4.4 N12 N16 N
- 17. Multiple ChoiceWhich has greater linear speed: a horse near the outside rail of a merry-go-round or a horse near the inside rail?the outside horsethe inside horsethey are travelling at the same speed
- 18. Multiple ChoiceWhat is the velocity of an object that accelerates at 4.6 m/s² in a circle with a radius of 3 m?3.71 m/s13.80 m/s1.53 m/s9.81 m/s
- 19. Multiple ChoiceThe orbit of each planet is a(n) __________, with the Sun at one focus.ellipsecircletorusplatonic solid
- 20. Multiple Choice
Which of the following is the correct formula for centripetal force?
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