Kinematics in three dimension
Position and displacement
The purpose of this section is to generalize the previously introduced concept of displacement, velocity, and acceleration in order to deal with motion in three dimensions
Motion of projectile
Study the motion of a body which is given some initial velocity and starts from some initial position and follows a path determined by the effect of the gravitational acceleration and by air resistance. Projectile path is called its trajectory.- free falling body near the earth s surface experiences downward acceleration with g=9.8 m/ss