PE, and Power

IB Physics: PE, and Power

Now it can be seen how the introduction of energy solves the collision problem.Students often think that KE=1/2mv2 and PE=mgh. The first is correct but the second is a specific example so its worth showing some other examples like elastic PE.Students will be familiar with games such as pool so understand how balls collide, they will be surprised to find out that during a 2D elastic collision the balls always bounce off...


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