 # 1644519293 184 PHYS 100 - Tutorial 4 2022 - solution.pdf -...

• 6

Course Hero uses AI to attempt to automatically extract content from documents to surface to you and others so you can study better, e.g., in search results, to enrich docs, and more. This preview shows page 1 - 3 out of 6 pages.

Tutorial 4February 8-10, 2022Question 1A golfer hits a shot to a green that is elevated 3 m above the point where the ballis struck. The ball leaves the club with a speed of 14.0 m/s at an angle of 40° above thehorizontal. The ball rises to its maximum height and then falls to the green. Find the speed ofthe ball just before it lands. (Do you expect this to be greater than, less than, or equal to theinitial speed?)We want final speed. We know total displacement in the y is +3.0 m. We know horizontalspeed will stay constant if we ignore air resistance.We know acceleration in the ydirection is g. We need to stick a minus sign in since the initial y velocity is up or positive,and the final is down so we will call it negative.So, we find the final x and y componentsof velocity and then add them as perpendicular vectors using Pythagorean theorem.Horizontally, we getFor the vertical we do not know time, but we know y, so we use equation
So final speed is gotten from

Course Hero member to access this document

Course Hero member to access this document

End of preview. Want to read all 6 pages?

Course Hero member to access this document

Term
Fall
Professor
ANDREW
Tags
Velocity, Euclidean geometry
• • • 