Roller Coaster

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 question.

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

0 People tried to answer this question

1.  Pelekhov Veronika (2014-12-20 15:00:00)


Hello, Alona!

Great work, I didn't find much to say about the possible improvements or changes.

I like the way you've presented the energy conservation topic. The story about Ruth the teacher makes this question interesting and realistic. Roller coasters are the part of almost every childhood, fact that emphasizes the relation to everyday life.

The simulation is very helpful and includes variety of options, thing that can help a lot to every child, depending on what he needs. Students can answer the question after using this simulation.

The geographic point is a good clue to the right answer and will help to those who still have difficulty in understanding the subject after using the simulation. In the video the students can see that the height of the moving swing depends on the starting height.

I liked your work very much!

Good Luck,


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