Kinesiology 2241A/B Lecture 2: 2-Spin-Rebound-and-Restitution
28 views2 pages
12 Jan 2016
School
Department
Course
Professor
Document Summary
No a accept due to air drag v is the same at release and impact (only negative) V is 0 at apex of flight a gravity. What applies on the x axis, does not always in the z and vice versa. Same time, difference is the bullet would be a farther distance away (huge velocity in x direction), velocity the same from shot to impact, only affect on it is air. Z- gravity acting on any object traveling in z direction, decelerate up, accelerate down, Tossing a ball up same velocity just in opposite direction, only thing affecting flight is gravity, v is 0 at apex. A reaction force in the opposite direction of the spin (red) Apply spin, changes direction of travel after it contacts a surface (ex. tennis) Ball rebound is in the direction of the reaction force. Bottom of ball moving toward flight direction (traveling ccw)