Physics Study Notes on Free Fall and Velocity Calculation

Velocity (V)

The rate at which an object changes its position, including direction. In this context, it refers to the final velocity (Vf) of the object after falling.

Initial Velocity (V\_i)

The velocity of an object at the beginning of its motion. For an object 'dropped', the initial velocity is 0 meters per second.

Final Velocity (V\_f)

The velocity of an object at the end of a specific time interval or at a particular point in its motion.

Acceleration (a)

The rate at which an object's velocity changes over time. In free fall, the acceleration due to gravity is approximately -9.8 meters per second squared.

Time (t)

The duration over which the motion occurs. In this problem, it is 18 seconds.

Free Fall

The motion of an object solely under the influence of gravity, assuming air resistance is negligible.

Kinematics

The branch of classical mechanics that describes the motion of points, bodies (objects), and systems of bodies without considering the forces that cause them to move.