Which of the following is an example of potential energy changing into kinetic energy?

A. A girl climbing up a hill
B. A fruit falling from a tree
C. A car stopping when the brake is applied
D. A child on a swing slowing down as she swings upwards

Answer

B. a fruit falling from a tree

Explanation:

Take, for example, an apple tree. ... The tree uses this energy to build leaves and branches and fruit. When an apple falls from the tree to the ground, its energy of position (stored as gravitational potential energy) is converted to kinetic energy, the energy of motion, as it falls.

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

6.4 cm (max) - 25 cm (min)