Phy 231
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A typical automobile coasts up a typically paved incline, stops, and coasts back down to the same position.
• When it reaches this position, is it moving faster, slower or at the same speed as when it began? Explain
answer/question/discussion: ->->->->->->->->->->->-> :
If friction is neglected, then once it reaches the same position from where it left, the automobile should be going the same speed (but in the opposite direction). This is because the energy is conserved. The energy transfers from kinetic to potential as it moves upwards and slows down, and then back to kinetic as it returns to its original position.
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5 min
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