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- 1. Multiple Choice
Newton said that any two masses will...
combine into a larger mass.
attract each other.
create gravitational fields.
push each other apart.
- 2. Multiple Choice
According to Newton's law of gravitation, the Earth and the Moon are gravitationally attracted to each other. The more massive Earth attracts the Moon with...
a stronger force than the Moon attracts the Earth.
a weaker force than the Moon attracts the Earth.
the same force as the Moon attracts the Earth.
a force that is sometimes stronger and other times weaker than the Moon attracts the Earth.
- 3. Multiple Choice
Which of the following best explains why a person has less weight on top of a mountain?
They are closer to space.
The atmosphere is lighter.
The mountain adds more mass.
The mountain adds more distance.
- 4. Multiple Choice
The picture shows three objects gravitationally interacting with each other. Which object exerts the greatest force on object B?
Object A
Object C
A and C exert an equal force on B
Cannot be determined
- 5. Multiple Choice
The picture shows three objects gravitationally interacting with each other. Which object exerts the greatest force on object B?
Object A
Object C
A and C exert an equal force on B
Cannot be determined
- 6. Multiple Choice
A massive object and a less massive object exert a gravitational force on each other. Which of the following picture correctly shows the magnitude and direction of the forces involved in this interaction?
- 7. Multiple Choice
The gravitational force in the previous interaction was 20 N. Determine the gravitational force in the new situation where the second mass is doubled.
10 N
20 N
40 N
80 N
- 8. Multiple Choice
The distance between the two masses in the previous situation is halved. Determine the gravitational force in this new situation.
20 N
40 N
80 N
160 N
- 9. Multiple Choice
The picture shows two identical satellites, A and B, in circular orbits around the Earth. Upon which satellite does the Earth exert a stronger gravitational force?
Satellite A
Satellite B
Equal on both
Cannot be determined
- 10. Multiple Choice
The Earth exerts a gravitational force of 12 N upon satellite B. Satellite A is twice as far away from the Earth as satellite B. Determine the gravitational force the Earth exerts on satellite A.
3 N
6 N
12 N
24 N
- 11. Multiple Choice
A third identical satellite, C, is placed in orbit with half the orbital radius as satellite B. Determine the gravitational force the Earth exerts on satellite C.
6 N
12 N
24 N
48 N
- 12. Multiple Choice
The picture shows two situations of two objects gravitationally attracting each other. What is the proportional change in the second mass of situation 2 as compared to situation 1?
1/2
1
3
6
- 13. Multiple Choice
The picture shows two situations of two objects gravitationally attracting each other. What is the proportional change in distance of situation 2 as compared to situation 1?
1/2
1
2
4
- 14. Multiple Choice
The picture shows two situations of two objects gravitationally attracting each other. What is the proportional change in the gravitational force in situation 2 as compared to situation 1?
1/4
1/2
1
2
- 15. Multiple Choice
The picture shows three bodies (A, B, and C) that gravitationally attract each other. Between which two bodies is the force of gravity the strongest?
A and B
A and C
B and C
Equal for all
- 16. Multiple Choice
The picture shows the gravitational field in the space surrounding the Earth. What is creating this gravitational field?
The gravitational force.
The mass of the Earth.
The distance of the Earth.
The universal gravitational constant.
- 17. Multiple Choice
The figure shows the gravitational field surrounding the Earth. Which of the following explains why the field lines point towards the Earth?
Gravity is an attractive force.
The force of gravity points towards the center of the Earth.
Falling bodies accelerate towards the center of the Earth.
All of the above.
- 18. Multiple Choice
An apple is placed in the Earth's gravitational field. Which of the following best explains why the apple falls to the ground?
The field exerts a gravitational force upon the apple.
The Earth exerts a gravitational force upon the apple.
Masses attract each other.
On Earth, all objects fall with acceleration 9.8 m/s².
- 19. Multiple Choice
Which of the following statements is correct with respect to G and g?
G is a fundamental constant, whereas g is a physical quantity and subject to change.
Both G and g can change, but g can only change if you go to a different planet.
G and g are both constant, but g is determined by the mass and radius of the Earth.
The strength of G is determined by g.
- 20. Multiple Choice
The surface gravity on Earth is approximately 10 N/kg. What would the surface gravity be if the Earth contained twice as much mass?
5 N/kg
10 N/kg
20 N/kg
40 N/kg
- 21. Multiple Choice
Suppose an exoplanet is found that has the same mass as the Earth, but is slightly larger than the Earth. What would be the surface gravity on this planet?
less than 10 N/kg
equal to 10 N/kg
more than 10 N/kg
cannot be determined
- 22. Multiple Choice
A newly discovered exoplanet has triple the mass and double the radius as compared to Earth. What is the approximate surface gravity on this exoplanet?
1.5 N/kg
7.5 N/kg
15 N/kg
60 N/kg
- 23. Multiple Choice
The picture shows two exoplanets, b and c. The mass and radius of each planet is given in terms of M and r. What is the surface gravity on planet-c if the surface gravity on planet-b is 4 m/s2?
2 m/s2
4 m/s2
8 m/s2
32 m/s2
- 24. Multiple Choice
The mass and radius of four exoplanets are shown in terms of the Earth's mass and radius. On which of these planets will the surface gravity be greater than on Earth?
planet-b
planet-c
planet-d
planet-e
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