An apple falls (from rest) from a tree. it hits the ground at a speed of about 4.9 m/s. what is the approximate height (in meters) of the tree above the ground? the magnitude of the gravitational acceleration g = 9.8 m/s2 enter your answer in meters. keep 2 decimal places.

The inicial height of the apple is 1.22 meters

Explanation:

Using the equation for conservarion of mechanical energy:

where v is the velocity

where h is the height

We equate the initial mechanical energy to the final:

Since :

Solving for h:

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c.the charges if the proton and electron and gravity