Q1: 1. What is the force of gravity between two objects with masses of 5 kg and 10 kg placed 2 meters apart?

• A) 0.2 N
• B) 0.4 N
• C) 1.6 N
• D) 3.2 N

Q2: 2. Which law states that the force of attraction between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them?

• A) Newton's First Law
• B) Newton's Second Law
• C) Newton's Third Law
• D) Law of Universal Gravitation

Q3: 3. What is the acceleration due to gravity on the surface of Mars, where the mass of Mars is 6.42 x 10^23 kg and its radius is 3.389 x 10^6 meters?

• A) 3.72 m/s^2
• B) 5.91 m/s^2
• C) 9.81 m/s^2
• D) 12.18 m/s^2

Q4: 4. If an object weighs 500 N on Earth's surface, what would be its weight on the surface of a planet where the acceleration due to gravity is half that of Earth?

• A) 125 N
• B) 250 N
• C) 500 N
• D) 1000 N

Q5: 5. Which of the following factors does NOT affect the force of gravity between two objects?

• A) Mass of the objects
• B) Distance between the objects
• C) Shape of the objects
• D) Gravitational constant

Q6: 6. What happens to the gravitational force between two objects when the distance between them is doubled?

• A) It decreases by a factor of 2
• B) It decreases by a factor of 4
• C) It decreases by a factor of 8
• D) It decreases by a factor of 16

Q7: 7. Which of the following planets has the highest acceleration due to gravity?

• A) Earth
• B) Jupiter
• C) Venus
• D) Mars

Q8: 8. If the mass of an object is doubled, how does its weight change on the surface of Earth?

• A) It doubles
• B) It quadruples
• C) It halves
• D) It remains the same

Q9: 9. Which of the following statements is true about gravitational potential energy?

• A) It is highest at the lowest point
• B) It is lowest at the highest point
• C) It is independent of the mass of the object
• D) It is directly proportional to the height of the object

Q10: 10. What happens to the weight of an object when it is taken to a planet with a higher acceleration due to gravity than Earth?

• A) It decreases
• B) It increases
• C) It remains the same
• D) It becomes zero

Q11: 11. The force of gravity between two objects is 36 N when they are 3 meters apart. What will be the force of gravity if the distance is reduced to 1 meter?

• A) 9 N
• B) 12 N
• C) 18 N
• D) 27 N

Q12: 12. Which celestial body exerts the strongest gravitational force on Earth?

• A) Sun
• B) Moon
• C) Jupiter
• D) Venus

Q13: 13. The acceleration due to gravity on the Moon is approximately what fraction of the acceleration due to gravity on Earth?

• A) 1/6
• B) 1/2
• C) 2/3
• D) 3/4

Q14: 14. Which of the following best describes the relationship between mass and weight?

• A) Mass and weight are the same
• B) Mass is a measure of the amount of matter in an object, while weight is the force of gravity acting on the object
• C) Weight is a scalar quantity, while mass is a vector quantity
• D) Mass and weight are independent of each other

Q15: 15. If the distance between two objects is doubled, by what factor does the gravitational force between them change?

• A) Halved
• B) Doubled
• C) Quadrupled
• D) Remains the same

Q16: 16. Which of the following factors affects the gravitational force between two objects the most?

• A) Mass of the objects
• B) Distance between the objects
• C) Gravitational constant
• D) Shape of the objects

Q17: 17. The weight of an object on the surface of a planet is 300 N. If the acceleration due to gravity on that planet is 10 m/s^2, what is the mass of the object?

• A) 30 kg
• B) 40 kg
• C) 50 kg
• D) 60 kg

Q18: 18. What is the gravitational force between two objects with masses of 8 kg and 12 kg placed 4 meters apart?

• A) 0.8 N
• B) 1.2 N
• C) 2.4 N
• D) 3.6 N

Q19: 19. Which of the following statements is true about gravitational force?

• A) It is a contact force
• B) It is a non-contact force
• C) It depends on the color of the objects
• D) It increases with the speed of the objects

Q20: 20. If the mass of an object is tripled, how does its gravitational potential energy change?

• A) It triples
• B) It doubles
• C) It halves
• D) It remains the same

Q21: 21. Which of the following planets has the lowest acceleration due to gravity?

• A) Mercury
• B) Saturn
• C) Uranus
• D) Neptune

Q22: 22. What is the gravitational force between two objects with masses of 6 kg and 9 kg placed 5 meters apart?

• A) 0.9 N
• B) 1.8 N
• C) 2.7 N
• D) 3.6 N

Q23: 23. When an object is lifted to a greater height, what happens to its gravitational potential energy?

• A) It decreases
• B) It increases
• C) It remains the same
• D) It becomes zero

Q24: 24. Which of the following factors affects the acceleration due to gravity on a planet?

• A) Mass of the planet
• B) Radius of the planet
• C) Distance from the Sun
• D) Rotation speed of the planet

Q25: 25. If the distance between two objects is tripled, how does the gravitational force between them change?

• A) It decreases by a factor of 3
• B) It decreases by a factor of 6
• C) It decreases by a factor of 9
• D) It decreases by a factor of 27