Una partícula en movimiento con una aceleración constante tiene una velocidad de 20 cm/s cuando su posición es x = 10 cm. Su posición 8.1 s más tarde es x = -30 cm. ¿Cuál es la aceleración de la partícula?

Describe uniform velocity and variable velocity in short

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.

According to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does maria's voyage take according to samir?