This is a science question.

What is the acceleration of this helicopter?

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible? a. attractive forces between gas particles are negligible because the particles of an ideal gas are moving so quickly. b. collisions between gas particles are elastic; there is no net gain or loss of kinetic energy. c. gases consist of a large number of small particles, with a lot of space between the particles. d. gas particles are in constant, random motion, and higher kinetic energy means faster movement.

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

Which best describes how johannes kepler developed his laws of planetary motion