Two children are throwing a ball back-and-forth straight across the back seat of a car. Suppose the ball is being thrown at 10 mph relative to the car and the car is going 25 mph down the road.
(a) Make a sketch showing the relevant velocity vectors.
(b) If one child does not catch the ball and it goes out an open window, what angle does the ball’s horizontal motion make with the road?

Question

Two children are throwing a ball back-and-forth straight across the back seat of a car. Suppose the ball is being thrown at 10 mph relative to the car and the car is going 25 mph down the road.
(a) Make a sketch showing the relevant velocity vectors. 
(b) If one child does not catch the ball and it goes out an open window, what angle does the ball’s horizontal motion make with the road?