Two extremely large asteroids are moving toward each other. No contact forces are acting on the asteroids. What could be causing the asteroids to move?

Question

Check all that are true.

gravity

electrical force

friction

non-contact force

Answer 1

In the scenario of two extremely large asteroids moving toward each other, the following statements can be checked for their validity:

1. Gravity: True. The gravitational attraction between the two asteroids can cause them to move toward each other.

2. Electrical Force: True, but not typically applicable on a cosmic scale for asteroids. While electrical forces exist, they are usually negligible compared to gravitational forces for large celestial bodies. However, if the asteroids have significant charge, it could theoretically be a factor.

3. Friction: False. Friction generally requires contact between surfaces, which is not the case here as the question states there are no contact forces acting on the asteroids.

4. Non-contact Force: True. Gravity is a non-contact force, and it is the primary non-contact force acting on the asteroids as they move toward each other.

In summary, the valid statements are:

• Gravity
• Electrical Force (with qualifications)
• Non-contact force