PSC 133 Lecture Notes - Lecture 7: Projectile Motion, Plus And Minus Signs, Net Force
39 views2 pages
20 Sep 2019
School
Department
Course
Professor
Document Summary
Pumpkin is being pulled to the surface of the earth by its weight. By ignoring friction of air, the only force acting upon a projectile in motion is weight. Weight affects vertical motion of the projectile only. For this reason, it is always easiest to treat vertical and horizontal motions separately. A projectile is shot from ground directly upward with certain speed, assuming the friction of air is negligible: Initially, the projectile is moving upward with speed vy0. Minus sign is attached to mg because ti is pointing to negative y direction. For this case, the speed and position are: vy=vy0-gt, y=y0+y0t-1/2gt^2 where time is in seconds. An object has thrown upward from the ground with the initial speed of 5. 0m/s. How long will it stay in the air? (hang time?) A projectile is shot from a platform horizontally with certain speed, assuming the friction of air is negligible,
Get access
Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers