Question

the law of conservation of energy states that...
energy can neither be created nor destroyed, but it can be transformed from one form to another.
energy can be created and destroyed
energy is only conserved in closed systems with no motion
energy can be created when objects move faster

a skateboarder starts at the top of a ramp and rolls down without pushing. as the skateboarder moves down the ramp, which statement best explains what happens to the energy?
the skateboarder gains energy because energy is created by motion
the skateboarder’s gravitational potential energy is converted into kinetic energy
the skateboarder loses energy because some energy disappears
the skateboarder’s kinetic energy is converted into gravitational potential energy

Explanation:

1. For the first question, the Law of Conservation of Energy defines that energy cannot be created or destroyed, only converted between forms.
2. For the second question, when a skateboarder rolls down a ramp, their height decreases (lowering gravitational potential energy) while their speed increases (increasing kinetic energy), following the energy conservation principle.

Answer:

1. Energy can neither be created nor destroyed, but it can be transformed from one form to another.
2. The skateboarder's gravitational potential energy is converted into kinetic energy