Forces


Ep. 270: Inertia


Posted on Sep 10, 2012 in Forces, Physics

An object at rest tends to stay at rest. An object in motion tends to stay in motion. Isaac Newton dismantled the traditional idea that objects would tend to slow down over time, and described the concept of inertia: the amount an object will resist changes in its motion.

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Ep. 268: Energy


Posted on Jul 10, 2012 in Forces, Physics

Our entire civilization depends on energy: getting it, converting it, burning it, and conserving it. But how do physicists think about energy? How do they measure and quantify it. And what is energy’s special relationship with mass?

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