A10 kg box is pushed with a force of 20n. what is the box's acceleration? 200 m/s 2 m/s2 2 m/s 200 m/s2

Which of these statements is true? a. quarks pair with leptons to form protons and neutrons. b. quarks pair with bosons to form photons. c. quarks pair with photons to form protons and neutrons. d. quarks pair with other quarks to form protons and neutrons. e. quarks pair with electrons to form protons.

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.