Question

If two objects have masses m₁ and m₂ and are separated by a distance d, what happens to the gravitational force between them if the distance is doubled?

Assertion (A): An object moving in uniform circular motion has a constant speed. Reason (R): In uniform circular motion, the direction of the object's velocity changes continuously.

A satellite is moving in a circular orbit around the Earth with constant speed. Which of the following statements is true?

An astronaut named Alex is exploring a newly discovered planet, Xylon, which has a mass of 5 × 10²⁴ kg and a radius of 6,400 km. Alex, with a mass of 80 kg, is on the surface of Planet Xylon. The planet is unique because it has only one-sixth of the density of Earth but the same surface gravity.