2. Un motociclista viaja hacia el oriente con una velocidad de 90 km/h durante 10minutos, regresa al occidente con una velocidad de 54km/h durante 20 minutos y finalmente vuelve al oriente durante 15minutos viajando a una velocidad de 108 km/h. Si marchan en el mismo sentido

Aray diagram for a refracted light day is shown. what does the dashed line represent

Truck traveling west on the highway experiences an acceleration to the east. what could be the cause of this acceleration

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.