Una esfera de 4 kg se desplaza a una velocidad determinada y choca con otra masa es de 2 kg que se desplaza a una velocidad de 7 m / s, si se produce el choque la primera esfera se desplaza con una velocidad de 12 m / sy la segunda se desplaza con una velocidad de 5m / s ¿Cuál era la velocidad de la primera esfera antes del choque?

On a hot saturday morning while people are working inside, the air conditioner keeps the temperature inside the building at 22degreesc. at noon the air conditioner is turned off, and the people go home. the temperature outside is a constant 33degreesc for the rest of the afternoon. if the time constant for the building is 4 hr, what will be the temperature inside the building at 4 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? at 6 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? when will the temperature inside the building reach 24degreesc? 324281