AP Physics Unit 3 review

• uniform circular motion:

  • constant speed
  • constant radius
  • constant acceleration (points toward center)
• circular motion acceleration equation:

  $a=$$v^2/r$
• circular velocity equation:

  $V=$$2πr/T =$$2πrF$
• Newton's 2nd law with respect to circular motion:

  $ΣFc=$$ma$
• Curves:

  • friction points inward: $ΣF=$$Ff$
  • banked curves with no friction: $ΣF=$$Fnx$
• Newton's law of gravitation:

  $Fg=$$Gm1m2/r^2$

  $G=$$6.67*$$10^-11$
• Kepler's laws:

  1. orbits are in elipses
  2. sweep out equal areas in equal time
  3. $T^2/r^3 =$$K$