Please solve it in 20 min

Question I: An aircraft moves at a velocity of 156 km/hr [N60.W] changed to a velocity of 65.0 km/hr [N15.E] in 15 mins. Determine the acceleration of this aircraft. (K:2, A:2, C:2) W Question 2: A swimmer wants to cross a 4.5 km river. In still water she was able to swim at 3.0 km/hr. The river is flowing at 1.0 km/hr. Determine: (C:2 for diagrams) A. What is her velocity relative to the shore? (K:1, A:2) B. How far downstream will she land? (1:2) C. If she would like to arrive directly across the river, what direction should she make and how long will take her to across the river in this situation? (K:1, 1:3)