2. A cannon (5400 kg) is anchored to the ground so that does not recoil by any noticeable amount. The cannon launches a 75.0 kg cannonball horizontally at a speed of 565 m/s. If the cannon is no longer anchored to the ground and is free to move horizontally (no friction). What is the initial velocity of a cannonball launched by this mobile cannon? [the kinetic energy gained by the system in both launches are the same] [6 marks]