AP Chemistry Chapter 6 Electronic Structure and the Periodic Table.
AP Physics I Study Guide Chapter 2 - Abby & Katie's...
Transcript of AP Physics I Study Guide Chapter 2 - Abby & Katie's...
AP Physics I Study Guide Chapter 2
v Motion
Ø An object is moving it is position relative to a fixed point is changing Ø Position – where an object is precisely located
v Displacement and distance Ø Distance – separation between two points
§ Scalar
Ø Displacement – change in position with respect to a fixed point § Vector quantity § Magnitude and direction
Ø ∆𝑥 = 𝑣! − 𝑣! Ø Linear
§ 𝑦 = 𝑚𝑥 + 𝑏 § !"#$
!"#= ∆!
∆!
§ 𝑥 = 𝑚𝑡 + 𝑏 v Velocity and speed
Ø 𝑠𝑝𝑒𝑒𝑑 = !"#$%&'(!"#$
§ Total distance § Scalar – magnitude
Ø 𝑣𝑒𝑙𝑜𝑐𝑖𝑡𝑦 = !"#$%&'()*+!"#$
§ Must have direction § Vector – magnitude and direction
Ø 𝑣! =∆!∆!
Ø 𝑥! = 𝑣𝑡 + 𝑥! Ø 𝑣!"# =
∆!∆!
v Instantaneous and average velocity Ø Average velocity
§ Displacement traveled over an elapse in time § 𝑣 = ∆!
∆!
Ø Instantaneous velocity § Velocity at an exact point in time or a short time interval § The slope of tangent § lim!→!
∆!∆!= !"
!"
§ 𝑣 = lim!→!! !!∆! !!(!)
∆!= !"
!"
v Kinematics Ø Constant velocity
§ 𝑣 = ∆!∆!
Ø Constant acceleration § 𝑎! =
∆!!∆!
§ ∆𝑥 = 𝑣!"𝑡 +!!𝑎𝑡!
§ 𝑣!"! = 𝑣!"! + 2𝑎∆𝑥 § ∆𝑥 = !
!𝑣!" + 𝑣!" 𝑡
Ø if acceleration and velocity have the same sign you’re speeding up more and
vice versa Ø Opposite signs of acceleration and velocity means its slowing down
v Other Ø G’s = !
!.!"! !!
Ø ∆𝑥 = !!𝑣! + 𝑣! 𝑡
v Gravity Ø 9.81𝑚 𝑠
! = gravity = constant § At sea level
Ø 𝐹! = 𝑚𝑔 Ø Projectile – only influence of gravity affecting motion