[PHYS 101] - Midterm Exam Guide - Comprehensive Notes for the exam (10 pages long!)

• School: Drexel University
• Department: Physics
• Course: PHYS 101
• Professor: Dr.Brigita Urbanc

Document Summary

Vectorial/cross products (cid:1827) (cid:1828)= = |(cid:1827)| |(cid:1828)| (cid:1855)(cid:1867)(cid:1871) (cid:1861) (cid:1862)=(cid:882), (cid:1861) (cid:1863)=(cid:882), (cid:1862) (cid:1863)=(cid:882) Because (cid:1861) (cid:1862) (cid:1863) so (cid:1855)(cid:1867)(cid:1871)(cid:4666)9(cid:882)(cid:4667)=(cid:882) (cid:1861) (cid:1861)=(cid:1862) (cid:1862)=(cid:1863) (cid:1863)=(cid:883) (cid:1861)(cid:1876)(cid:1861)=(cid:1862)(cid:1876)(cid:1862)=(cid:1863)(cid:1876)(cid:1863)=(cid:882) (cid:1861) (cid:1876) (cid:1862)=(cid:1863),(cid:1862) (cid:1876) (cid:1863)=(cid:1861),(cid:1863) (cid:1876) (cid:1861)=(cid:1862) Instantaneous velocity: velocity at a specific point (of time or position) Slope of tangent line on an x(t) graph. Average acceleration: rate of change of velocity with time. + and increasing (moving in +x direction and speeding up) And decreasing (moving in +x direction and slowing down) And increasing (moving in -x direction and slowing down) And decreasing (moving in -x direction and speeding up) Slope of velocity is the average x-acceleration. If acceleration is positive, velocity is concave up (increasing) If acceleration is negative, velocity is concave down (decreasing) If acceleration is 0, velocity is at a max or a min. It is still possible to be moving with 0 acceleration (you are just moving at a constant rate)