A cannon is mounted on a truck that moves forward at a speed of 5 m/s. The operator wants to launch a ball from a cannon so the ball goes as far as possible before hitting the level surface. The muzzle velocity of the cannon is 50 m/s. At what angle from the horizontal should the operator point the cannon?
If the height of the cannon and the ground are the same and in the absence of air resistance, the fact that it is moving horizontally changes nothing from a static problem in which a 45 degree angle gives maximum x-axis displacement.
