On earth's surface the value of this constant g is 9.81 m/sec²

The following are some examples of projectile motion.

Here, a missile fired from one point reaches at the target at some distance away.

Kinematics of a Particle

Now we will take the example of a two-dimensional motion. We will study the motion of projectiles. Freely projected particle which move under the combined effect of a verticle and horizontal motion are called projectiles. It has only downward vertical acceleration due to gravity.