An Astronaut on the Surface of a Strange Planet Observes

question 1

Multiple Choice

An astronaut on the surface of a strange planet observes that the acceleration of gravity is 7 m/s².What could be an explanation of this phenomenon?

• A)The mass of the planet is the same as that of Earth,but the radius is smaller.
• B)The mass of the planet is less than that of Earth,and the radius is the same.
• C)The mass of the planet is less than that of Earth,and the radius is bigger.
• D)The mass of the planet is more than that of Earth,and the radius is the same.
• E)Both B and C could explain it.