Question

energy law of conservation of energy (achieving) practice it! select the statement that accurately labels the diagram. point a is the greatest pe, point b is pe, point c is the greatest ke. point a is ke, point b is the greatest ke, point c is the greatest pe. point a is the greatest ke, point b is the greatest pe, point c is ke. point a is the greatest pe, point b is the greatest ke, point c is pe.

Explanation:

The Law of Conservation of Energy states that energy cannot be created or destroyed, only transformed. Potential Energy (PE) is related to height (\(PE = mgh\), where \(m\) is mass, \(g\) is acceleration due to gravity, and \(h\) is height). Kinetic Energy (KE) is related to speed (\(KE=\frac{1}{2}mv^{2}\), where \(m\) is mass and \(v\) is velocity). At the highest point (Point A), the object has the greatest potential energy (since \(h\) is maximum). As the object moves down, potential energy is converted into kinetic energy. At the lowest point (Point C), the object has the greatest kinetic energy (since \(v\) is maximum if we assume no non - conservative forces like friction, and energy is conserved between \(PE\) and \(KE\)). Point B is an intermediate point with some \(PE\) (because it has some height) and some \(KE\) (because it has some speed).

Answer:

Point A is the greatest PE, point B is PE, point C is the greatest KE.