9. A ping pong ball is smashed straight down the centre line of the table at 60.0 km/h. However, the game is outdoors and a crosswind of 25.0 km/h sweeps across the table parallel to the net. How many degrees off centre will the ball end up? What is the ping pong ball's speed overall? Show all work. 10. The still water velocity of a rower is 5.0 m/s. At what angle must this rower point upstream to be able to land directly across the river? The current is moving at 3.0 m/s. a. Draw a fully labeled vector diagram of this scenario and solve. b. A common incorrect answer for (a) is 31 degrees. What mistake results in that answer? 11. The kinematic equation d = vt is used in conjunction with relative velocity questions. Explain why the other kinematic equations are not useful for most relative velocity questions