PHYS 101 Lecture 14: Chapter 3-2
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Neglecting air resistance, two objects that are dropped together will fall together, regardless of their weights, shapes or of the materials of which they are made. With this la(cid:449) of falli(cid:374)g the idea of (cid:862)(cid:374)atu(cid:396)al (cid:373)otio(cid:374)(cid:863) (cid:449)as gi(cid:448)e(cid:374) a fatal (cid:271)lo(cid:449). The era of using experiments to test scientific concepts had began. Aristotle had to come up with a complicated explanation leading to the air behind the arrow pushi(cid:374)g it fo(cid:396)(cid:449)a(cid:396)d. (cid:894)the ai(cid:396), (cid:396)ushi(cid:374)g i(cid:374) afte(cid:396) the a(cid:396)(cid:396)o(cid:449) pa(cid:396)ted it, i(cid:374) o(cid:396)de(cid:396) to p(cid:396)e(cid:448)e(cid:374)t a (cid:448)a(cid:272)uu(cid:373), (cid:862)pushed(cid:863) the arrow forward). Galileo also did expe(cid:396)i(cid:373)e(cid:374)ts that (cid:395)uestio(cid:374)ed (cid:862)(cid:448)iole(cid:374)t (cid:373)otio(cid:374)(cid:863). This was a major step forward in understanding motion, away from the genius and influence of. In particular, the idea that horizontal motion can only occur if there is a push or pull present and that the object stops when the push or pull stops. How high will it go on the other side? (neglect friction)
