A ball of mass M = 17 kg is suspended from a vertical inextensible string of length l = 1.5 m. A bullet of mass m = M/2 traveling with a horizontal velocity v = 9sqrt(g*L) collides with the ball and gets stuck inside. As a result of the impact the ball moves in a vertical circle of radius L. Assume that the string remains taut throughout the motion. What is the velocity of the ball-bullet system at the highest point of the trajectory (Answer in units of m/s)? Also, what is the tension in the string at this point (Answer in units of N)? (g=9.8m/s^2).