H universal gravitation

A person is standing on Earth. What is the difference between their weight and gravitational force?

• Their gravitational force is greater
• Their weight is greater
• They are the same thing

Which of the following explains the meaning of G?

• It is known as the acceleration of gravity on a planet
• Universal gravitational constant - needed to calculate force
• It is the same as g
• It is the gravitational force attraction

Which of the following explains the meaning of the gravitational field, g?

• It is identical in concept and magnitude to the gravitational force

• It is the attractive pull of any object - analogous to a magnet's field

• It is the same as the universal gravitational constant, G

• It is the attractive pull of a planet that increases or decreases depending on what satellites are in the field

Which of the following options best explains why astronauts float in the ISS?

• The ISS is in constant free fall toward Earth

• Their gravitational attraction to Earth is too weak

• The astronauts do not accelerate relative to Earth

• There is no gravity in the ISS

• The Earth's gravitational field is too weak in the ISS

How much does an astronaut's gravitational force on Earth compare to that on the ISS?

• The weight is the exact same as on Earth

• Only a bit less - about 90% of that on Earth

• None because there is no gravity on the ISS

• About the same as that of the Moon

• About half compared to Earth

The Moon orbits Earth. If the mass of the Moon is halved, what happens to its gravitational force toward Earth?

• It doubles
• It halves
• It quadruples
• It quarters

The Moon orbits Earth. If the distance between the Moon and Earth is doubled, what happens to the gravitational force?

• It doubles
• It halves
• It quadruples
• It quarters

The Moon orbits Earth. If the distance is between Moon and Earth is doubled, what happens to the Moon's speed?

• It increases
• It decreases
• It remains unchanged

The Moon orbits Earth. If the Moon's mass is doubled, what happens to the Moon's speed?

• It increases
• It decreases
• It remains unchanged

Which of the following would likely be the radius value closest to a Jupiter-like planet?

• 1750 m
• 3.25*10³ m
• 7*10⁷ m
• 2*10²⁷ m