Posts Tagged "Forces"

Ep. 318: Escape Velocity

Posted on Oct 28, 2013 in Physics, Space Flight

Sometimes you’ve just got to get away from it all. From your planet, your Solar System and your galaxy. If you’re looking to escape, you’ll need to know just what velocity it’ll take to break the surly bonds of gravity and punch the sky.

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Ep. 314: Acceleration

Posted on Sep 9, 2013 in Astronomy, Forces, Physics

Put that pedal to the metal and accelerate! It’s not just velocity, but a change in velocity. Let’s take a look at acceleration, how you measure it, and how Einstein changed our understanding of this exciting activity.

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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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