Question

Kinematic equations of motion under gravity

Answer 1

That is to say that any object that is moving and being acted upon only be the force of gravity is said to be "in a state of free fall." Such an object will experience a downward acceleration of 9.8 m/s/s. ... Like any moving object, the motion of an object in free fall can be described by four kinematic equations.

Answer 2

1. If the height of an object of mass m changes by Δh, the change in gravitational energy is ΔE g=mgΔh. If gravity is the only force acting on an object, the sum of kinetic energy and gravitational energy is constant. Increases in kinetic energy are balanced by decreases in gravitational energy, and vice versa.
2. Under gravity, acceleration is 9.8 m/s² and is denoted by g. When an object is falling freely under gravity, then the above equations would be adjusted as follows: v = u + gt. h = ut + 1/2 gt.