A heavy tank rolls along flat terrain at 48.0 km/h and fires its main cannon, which points 30.0° above the horizontal in the direction the tank is moving, as shown

in Figure A1.13. The shell leaves the barrel with muzzle velocity of 480 m/s relative to the moving tank. Neglect the height of the barrel and air resistance. Do not neglect the speed of the tank. a. Calculate the maximum height of the shell. b. How long does it take the tank to arrive at the target hit by the shell?