Students in physics class observing the race note that each runner maintains the same acceleration from the start of the 8.0 second interval until they each reach the finish line where each of the runners slows to a stop. two students in the class make the following claims about the runners' accelerations from the start of the 8.0 second interval until both runners are at rest. student 1:runner a has a positive acceleration until reaching the finish line in order to undo all of the positive velocity she gained since runner b never had any positive acceleration she doesn't need any negative acceleration to slow a stop her acceleration will be zero the whole time student 2:but negative values mean away south in this case how could runner a be turning around? i think both runners must have positive accelerations the whole time since they are always moving north Do not simply repeat the student's arguments in your answers Questions: 1. which aspects of student 1's reasoning if any are correct? Explain your answer 2) which aspects of student 1's reasoning if any are incorrect explain your answer 3) which aspects of student 2's reasoning, if any, are correct explain your answer 4) which aspects of student 2's reasoning if any are incorrect explain your answer
Students in physics class observing the race note that each runner maintains the same acceleration from the start of the 8.0 second interval until they each reach the finish line where each of the runners slows to a stop. two students in the class make the following claims about the runners' accelerations from the start of the 8.0 second interval until both runners are at rest.
student 1:runner a has a positive acceleration until reaching the finish line in order to undo all of the positive velocity she gained since runner b never had any positive acceleration she doesn't need any negative acceleration to slow a stop her acceleration will be zero the whole time
student 2:but negative values mean away south in this case how could runner a be turning around? i think both runners must have positive accelerations the whole time since they are always moving north
Do not simply repeat the student's arguments in your answers
Questions:
1. which aspects of student 1's reasoning if any are correct? Explain your answer
2) which aspects of student 1's reasoning if any are incorrect explain your answer
3) which aspects of student 2's reasoning, if any, are correct explain your answer
4) which aspects of student 2's reasoning if any are incorrect explain your answer
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