Three forces act on an object with F, = (6.03/ - 11.17)) N and F2 = (-2.56/ - 15.59)) N. If the net force on the object is zero, what is the unknown force, Fa? (Express your answer in vector form.) F, = You are riding a luxury bus. In front of you is a cup of tea resting on the seat-back tray. Which of the following events may lead to spilled tea in your lap? Don't worry about other circumstances such as a person knocking your cup over. (Select all that apply.) O The bus moves at constant velocity. O The bus remains at rest. O The bus slows down. The bus speeds up. Explain your answers. (Select all that apply.) O The cup will not spill in your lap if it tips away from you. The cup spills any time the bus is in motion. The cup will spill only when the bus accelerates. O The cup will not spill due to the bus's motion. X