KhanAcademyVideos

Determining what to substitute for U and V in the pattern (U+V)²=U²+2UV+V² in order to factor (x+7)²+2y²(x+7)+y⁴.

Let's explore when work is positive & negative. 

Let's calculate work done when velocities are given. 

Let's solve 2 problems on energy conservation.

Let's explore how to calculate 'work' in physics.

Let's derive the K.E. expression 1/2 m v^2.  

Let's derive expression for gravitational potential energy. 

Let's explore the work-energy theorem. 

Let's explore the meaning of power (rate of doing work) in physics. 

Let's calculate 2 problems on work done on lifting & falling bodies. 

Let's explore what kinetic & potential energies are.

Let's explore the law of conservation of energy.

Let's see why work done by gravity is path independent. 

John Dickerson discusses the history and the significance of the Articles of Confederation. John Dickerson is co-host of CBS This Morning. He was previously CBS News' Chief Washington Correspondent, Political Director and anchor of Face The Nation. Dickerson is also a contributor to Slate's Political Gabfest and to The Atlantic. During the 2016 presidential campaign, Dickerson moderated CBS News' two presidential debates. Prior to CBS, Dickerson was Slate Magazine's Chief Political correspondent and covered politics for twelve years for Time magazine. 

John Dickerson discusses George Washington's leadership qualities and his role as president. John Dickerson is co-host of CBS This Morning. He was previously CBS News' Chief Washington Correspondent, Political Director and anchor of Face The Nation. Dickerson is also a contributor to Slate's Political Gabfest and to The Atlantic. During the 2016 presidential campaign, Dickerson moderated CBS News' two presidential debates. Prior to CBS, Dickerson was Slate Magazine's Chief Political correspondent and covered politics for twelve years for Time magazine. 

John Dickerson discusses the characteristics of the Gilded Age and how the era got its name. John Dickerson is co-host of CBS This Morning. He was previously CBS News' Chief Washington Correspondent, Political Director and anchor of Face The Nation. Dickerson is also a contributor to Slate's Political Gabfest and to The Atlantic. During the 2016 presidential campaign, Dickerson moderated CBS News' two presidential debates. Prior to CBS, Dickerson was Slate Magazine's Chief Political correspondent and covered politics for twelve years for Time magazine. 

Work through a word problems that involve 3-digit addition.

Work through a word problems that involve 3-digit subtraction.

Price discrimination is charging each consumer their entire willingness to pay. What if a monopolist can charge each buyer their entire willingness to pay? Learn about the effect of perfect price discrimination on output and deadweight loss in this video.

In this video, we explore how to use side-by-side graphs to illustrate profit maximization for a perfectly competitive firm using part of a question like the ones you might see on the AP Microeconomics exam.