John Z. answered • 11/27/19

Math/Physics/Engineering Tutor

Hi Ana,

To solve this question, we will rely on the following equation for potential energy:

Ep=m*g*h

where m is the mass, g is gravity (I'll assume gravity as 9.81 m/s^2) and h is height

when we start, the ball is not moving, so its total energy can be found from the equation provided above.

Ep1=2.5*9.81*5

Then, the ball bounces off the floor, and transfers some of its energy into the ground. The energy it has left only allows it to reach a height of 4 meters. using the same equation with the new height:

Ep2=2.5*9.81*4

we will get a new potential. The difference between the two is the energy lost to the ground (Ep1-Ep2)