Ruth is a science teacher, and one of her hobbies is to
design and build different models of roller coasters.
She decided to use her hobby for teaching: She built the
following roller coaster tracks and brought them to class for her students to
play and learn some physics.
Ruth marked two points, A and B, on each track, and asked
her students the following question: If the roller coaster is released from
point A (with no initial velocity), in which of the four tracks it will definitely
not reach point B? (Friction is negligible)
Look at the four tracks and mark the correct answer to her
The following simulation might help you answer the question by illustrating the principle of energy conservation:
It is recommended to use the pie chart, bar graph, grid and speed display