首页 > SAT > SAT II > 科学类 > 正文

SAT2物理考试力学公式全解

2016-08-04 10:57
摘要:SAT2物理考试力学公式全解

以下就是100留学为大家带来的SAT2物理考试力学公式全解,希望对各位考生的备考有所帮助:


Physics Formulas - Mechanics

Kinematics Formulas

The Kinematic Equations apply to one dimensional motion with constant acceleration from point 1, situated d1 from a point of reference to point 2, situated d2 from the same point of reference. v1 is the velocity at point 1 and v2 is the velocity at a point 2.


v2 = v1 + a·t

d2 = d1 + (v1 + v2)·t/2

d2 = d1 + v1·t + a·t2/2

d2 = d1 + v2·t - a·t2/2

v22 = v12 + 2a(d2 - d1)

Average velocity: vav = Δd/Δt

Average acceleration: aav = Δv/Δt


Rotationalkinematics equations with constant angular acceleration:

  ω2 = ω1 + α·t

  Φ2 = Φ1 + (ω1 + ω2)·t/2

  Φ2 = Φ1 + ω1·t + α·t2/2

  Φ2 = Φ1 + ω2·t - α·t2/2

  ω22 = ω12 + 2α(Φ2 - Φ1)

Average angular velocity: ωav = Δθ/Δt

Average angular acceleration: αav = Δω/Δt

Frequency: f = ω/2π

Period: T = 2π/ω


Relationsbetween angular and linear variables:

l = Φ·r

v = ω·r

a = α·r


Dynamics Formulas:

Pressure: P = F/A

Newton's Second Law: F = m·a

Force of kinetic friction: Ff = μ·N

Hooke's Law: F = -k·x

Centripetal Force: Fc = m·v2/R

Centripetal acceleration: ac = v2/R


Work,Energy, Conservation Laws Formulas

Work: W = F · d = Fdcos(α)

Potential Energy: PE = m·g·h

Kinetic Energy: KE = m·v2/2

Mechanical Energy: E = KE + PE

Instantaneous Power: P = F·v

The Work-Energy Theorem: W = ΔKE


GravitationFormulas

Newtonian gravity formula: Fg = G·m·M/R2

Kepler's Third Law: T2/a3 = ct.


以上就是关于力学的SAT2物理考试力学公式全解,内容较多,希望各位同学仔细阅读。更多SAT备考内容,请继续关注100留学教育。


100留学移动课堂出国留学语言培训专家
立即下载
移动课堂是100留学最新推出的“贴身学习伴侣”, 其中拥有名师直播、录播课程和名师答疑等多项服务。课堂可以为大家提供新的移动学习平台,让大家学习更方便,想学就学!
关注更多校区资讯,考试动态,满满的干货喂饱你!

考试提醒

查分:考后10个工作日
雅思在线MOCK系统

热门文章

编辑推荐