In World of Tanks, you are the driver of a tank on a large battlefield. Your main weapon is your cannon, which fire shells. The games internal physics engine makes the shells obey the laws of projectile motion, giving them a parabolic flight path. Gravity pulls them down, and air resists their forward motion which is similar to my blog on the physics of sniping in Battlefield. Another aspect of physics in battlefield is the suspension the tank tracks have to prevent damage from falls. The longer a collision takes, the more spread out the force will be so that it is not all at once. Therefore, the suspension allows the tank to remain intact after a high impact collision with the ground.