After a nice soft introduction to astronomy yesterday, today’s lesson hit students a bit harder. We went through a PowerPoint (posted below) that introduced the topic of gravity. We discussed what it is, how it is different on different planets, and what it does to an object. Lastly, we discussed how gravity is the same for all objects. When you remove air resistance, literally or figuratively, it turns out that all objects on Earth accelerate equally. (This makes sense; the force of gravity comes from the Earth, not the object). And the acceleration comes out to a very famous number: +9.8 m/s per second.
February 7 – Gravity Notes (pg502).pptx