select the correct answer. a ball rolls from ...
select the correct answer. a ball rolls from point a to point b. the total energy of the ball at point a isnt the same as the sum of its potential energy and kinetic energy at point b. which statement best explains this situation? a. the rolling ball doesnt follow the law of conservation of energy. b. some of the balls energy is transformed to thermal energy. c. the rolling ball loses some of its energy because of gravity. d. the ball absorbs some of its own potential energy.
Answer
# Brief Explanations:
The law of conservation of energy always holds. When the ball rolls from point A to point B, friction between the ball and the surface causes some of the mechanical energy (sum of potential and kinetic energy) to be converted into thermal energy. Gravity is a conservative - force and doesn't cause a loss of total mechanical energy in the absence of non - conservative forces like friction. A ball cannot absorb its own potential energy in a non - physical way.
# Answer:
B. Some of the ball's energy is transformed to thermal energy.