CAS AS 101 Lecture Notes - Ecliptic

• School: Boston University
• Department: Astronomy
• Course: CAS AS 101
• Professor: Paul Withers

Document Summary

Concepts: time & distance > used to calculate a speed, speed: change in distance (w/ no direction, velocity: change in distance per time (d / t, acceleration: change in speed (v/t, force: something that sets objects in motion (cid:224) no force (cid:224) no motion. Momentum: (objects mass x objects velocity: momentum is a vector just like velocity, total momentum of objects is the sum of momentum"s individual objects, conservation of momentum (cid:224) total momentum of a system of objects is fixed, total momentum of interacting objects can"t change unless an external force is (p1 = p2) (m1 v1 = m2 v2) acting on them, ex: basketball (massive object) transferring momentum to the tennis ball, spinning in place no overall velocity no momentum, angular momentum = (m x v x r) = mass x velocity x distance, linear momentum = straight line motion, angular momentum = spinning motion (cid:224) any object spinning or moving alone a curved path.