A tennis ball is thrown up to a height of 26 m. Neglecting air resistance, with what initial velocity was it thrown up with? Use Energy equations only

v = 22.58[m/s]  

Explanation:

To solve this problem we will use the principle of energy conservation, which tells us that potential energy is transformed into kinetic energy or vice versa.

We must remember that potential energy is defined as the product of mass by gravity by height.

And the kinetic energy can be calculated by means of the following expression.

Now equalizing the two equations we can determine the initial velocity.

where’s the list ? the question is incomplete

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.