Unformatted text preview: Memorize • X, Y component kinema2c equa2ons for 2D – Remember how to change if ay=
g – Remember vx=v0cos(θ), vy=v0sin(θ) • Rota2onal kinema2c equa2ons, like 1D – 1 rot=1 rev =2π rad – ω=2πf, Period=T=1/f – Angular variable, tangen2al variable rela2ons • Eg, s=rθ, v=rω – Centripetal accelera2on ac=
ω2r Memorize
2 • Know all the diﬀerent nota2ons of vectors – (x,y), [x,y], (mag, angle),v= ai+bj – Convert between (mag, angle)
> components – Dot product (both forms, mag, angle and comp.) – Add, subtract algebraically and graphically • Galilean rela2ve velocity, vpA=vpB+vBA Memorize 3
Math • Solu2on to Quadra2c Eqn (ax2+bx+c=0) • Law of Sines, Law of Cosines • Max, Min procedures – take deriva2ve, set to 0, ﬁnd loca2on of max,min, then insert to get the actual max or min value – Take 2nd deriva2ve to ﬁnd out if max or min • Integra2on – Indeﬁnite, deﬁnite, indeﬁnite with boundary condi2ons • Simple connec2ons to integrals, deriva2ves – Area under curve = integral – Slope of curve = deriva2ve – e.g., Integrate v(t) to get displacement • Two equa2ons, two unknowns Goals • Become more self reliant – teach yourself – Read the text, read the lecture notes – Do numerous problems •
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3 short homework 5
6 Monday 6 Wednesday Tutorial 12 Mastering Physics 3
4 Friday 2
3 Quiz – Seek help from friends, evening tutorial, messageboard, internet, TAs, oﬃce hours, look carefully at solu2ons posted to the website Goals
2 • Become more conﬁdent using a variety of math tools • Increase speed and accuracy – There is no such thing as a silly mistake • Learn to recognize basic and more challenging problems and learn strategies to solve them. • Most scien2ﬁc and technical ﬁelds involve cumula2ve knowledge – Strive for A
level mastery in introductory courses – Diﬀerent physics = similar equa2ons = re
use ideas – you don’t have to memorize every detail ...
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 Fall '08
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