Two basketballs are moving apart from each other at the same speed but in opposite directions. Is the gravitational force decreasing or is the speed changing?

What is a good example of instantaneous speed

What is the magnitude of the gravitational force acting on the earth due to the sun?

An unknown mineral sample has a mass of 318 g and a volume of 120 cm³. which mineral could the sample be? a. gypsum (density = 2.3 g/cm³) b. quartz (density = 2.65 g/cm³) c. apatite (density = 3.1 g/cm³) d. zircon (density = 4.65 g/cm³)