Question: A car runs out of fuel while traveling on a level road and eventually comes to a stop. Which of the following best explains why the car stops?
Answer: Some of the energy of the car was lost to friction.
Hypothesis: the car will stop when the mechanical energy in it is decreased by friction to 0
Supporting facts: sent1: colliding means coming into a collision sent2: an example of an object with kinetic energy is an object in motion sent3: skidding is a kind of motion sent4: skidding causes friction sent5: force causes the speed of an object to increase / to decrease sent6: heat is a kind of energy sent7: surfaces sometimes cause objects to break sent8: friction acts to counter the motion of two objects when their surfaces are touching sent9: countering the motion of a moving object means decreasing the mechanical energy of the moving object sent10: an example of mechanical energy is an object in motion sent11: if an object has 0 mechanical energy, then the object will stop moving sent12: a car is moving on a level road sent13: rubbing against something is a kind of contact sent14: if something is decreased and there is no source of that something to provide more of that something, then that something will decrease to 0 sent15: if there is a loss of something then that something decreases sent16: motion is a source of kinetic energy in an object sent17: vibration is a kind of motion sent18: the car runs out of fuel sent19: fuel is a source of mechanical energy for cars to move sent20: friction converts mechanical energy into heat energy sent21: if the energy is reflected before being absorbed , then the energy will be lost sent22: if one surface is moving on another surface then those surfaces are touching sent23: surface area is a property of shape sent24: if an object is not moving it does not have any motion to counter sent25: stop means not move
Reasoning: [BECAUSE] the car runs out of fuel [AND] fuel is a source of mechanical energy for cars to move [INFER] int1: the car does not have a source of mechanical energy to move [BECAUSE] a car is moving on a level road [AND] if one surface is moving on another surface then those surfaces are touching [INFER] int2: the moving car and the road are touching on their surfaces [BECAUSE] if an object is not moving it does not have any motion to counter [AND] friction acts to counter the motion of two objects when their surfaces are touching [INFER] int3: friction acts to counter the motion of only moving objects when the surfaces of two objects are touching [BECAUSE] int2 [AND] int3 [INFER] int4: friction will counter the motion of the moving car [BECAUSE] int4 [AND] countering the motion of a moving object means decreasing the mechanical energy of the moving object [INFER] int5: friction will decrease the mechanical energy of the moving car [BECAUSE] int1 [AND] int5 [INFER] int6: the car does not have a source of mechanical energy and friction will decrease the mechanical energy of the moving car [BECAUSE] int6 [AND] if something is decreased and there is no source of that something to provide more of that something, then that something will decrease to 0 [INFER] int7: the mechanical energy of the moving car will be decreased by friction to 0 [BECAUSE] int7 [AND] if an object has 0 mechanical energy, then the object will stop moving [INFER] int8: the car will stop when the mechanical energy in it is decreased by friction to 0