Kinematics in Two dimensions, from Cutnell & Johnson Physics: A tennis ball is struck such that it leaves the racket horizontally with a speed of 28 m/s. The ball hits the court at a horizontal distance of 19.6 m from the racket. What is the height of the tenis ball when it leaves the racket? -I've now clue how to solve this. . . A spacecraft is traveling with a velocity of 5480 m/s along the +x direction. Two engines are turned on for a time of 842 s. One engine gives the spacecraft an acceleration in the +x direction of 1.20 m/s2, while the other gives it an acceleration in the +y direction of 8.40 m/s2. At the end of the firing, find Velocity in the x direction and the Velocity in the x direction. -I don't even know where to begin. . . I worked at these for an hour and a half last night, but I couldn't figure them out.