Answer:
Mass and velocity.
Explanation:
Kinetic energy is the energy that an object has due to its movement, mathematically it is represented as follows:
[tex]K=\frac{1}{2} mv^2[/tex]
where [tex]m[/tex] is the mass of the object, and [tex]v[/tex] is its velocity at a given point in time.
So we can see that to find the kinetic energy just before the ball hits the gound, we need the quantities:
With the knowledge of these two quantities the kinetic energy of the ball before touching the gound can be determined.
