9- A box weighing 450 N is hanging from two chains attached to an overhead beam at angles of 70 and 78 to the horizontal. a) Draw a vector diagram of this situation. b) Determine the tensions in the chains. 10- 11- A rocket is fired at a velocity with initial horizontal component 510 m/s and vertical component 755 m/s. a) Draw a vector diagram of this situation. b) What is the ground velocity of the rocket? A small aircraft, on a heading of 225, is cruising at 150 km/h. It is encountering a wind blowing from a bearing of 315 at 35 km/h. a) Draw a vector diagram of this situation. b) Determine the aircraft's ground velocity.