5 Upwardly Launched Projectiles Conceptual Physics Text Correlation: Section 3.2 Question 1 • What determines • Answer: When the force of air resistance is small whether the effects compared to the force of air resistance are that propels something, important or not? then motion is not appreciably different with or without air resistance. But when air resistance makes up a strong component in the net force on something, then it makes a difference. Question 2 • Since in our everyday • Answer: Because air In this way he discovered environment there is the law of is a resistancefree fall and the always air resistance on law of inertia, both later dominating influence on a projectile, why do we embraced particularly projectiles,by Newton. high-speed be Things can projectiles, place so much it can obscure the a complicated. We get importance on cases physics of whatthem if we better grasp of is going where air resistance is on "beneath" the air rules first understand the "negligible"? drag. Galileo was one that apply when the complications are of the first to mentally strip away the air drag minimized. Being overwhelmed by to see what was the complications may beneath. prevent clear analysis.
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