Khan Academy
Khan Academy: The History of Everything Ted
David Christian gives a TED talk covering the Universe's 13.8 billion year history in 18 minutes.
Khan Academy
Khan Academy: Would a Brick or Feather Fall Faster?
What would fall faster on the moon, a brick, or a feather? Sal Khan answers this question in this video. [10:34]
Sophia Learning
Sophia: Weight
A video tutorial explaining the concept of an object's weight as it relates to physics. [2:51]
Khan Academy
Khan Academy: Normal Force: Normal Force and Contact Force
A discussion of the force that keeps a block of ice from falling towards the center of the Earth. The example problem has two 5-kg blocks of ice on the surface of a frozen lake, one stationary and one moving at a constant velocity. [7:18]
Khan Academy
Khan Academy: Mass and Weight Clarification
Sal Khan explains the difference between mass and weight. [10:40]
Khan Academy
Khan Academy: Deriving Displacement as Function of Time, Accel, Initial Velocity
Sal Khan discusses deriving displacement as a function of time, constant acceleration, and initial velocity in this video. [9:57]
Khan Academy
Khan Academy: Super Hot Tension
David shows how to solve a super hot tension problem where a can of peppers hangs from two diagonal strings. [16:55]
Science for Kids
Science Kids: Scientist Videos: Johannes Kepler Biography
Learn about Johannes Kepler's upbringing, education, published work and more with this short biographical video that gives a nice overview of who he was and what he achieved. [1:29]
The Kid Should See This
Tksst: The Hammer Feather Drop in the World's Biggest Vacuum Chamber
Brian Cox visits NASA's Space Power Facility to demonstrate what happens when a bowling ball and a feather are dropped together under the conditions of space. [4:41]
Khan Academy
Khan Academy: Mass Swinging in a Horizontal Circle
In this video, David from Khan Academy explains how to solve for the tension and speed of a mass swinging at an angle in a horizontal circle. [12:38]
Khan Academy
Khan Academy: Bowling Ball in Vertical Loop
In this video, David from Khan Academy explains how to find the normal force on a bowling ball rolling in a vertical loop. [8:48]
Khan Academy
Khan Academy: Force of Friction Keeping the Block Stationary
Sal Khan explains how a block of wood is kept stationary by the force of friction (correction made in next video). [8:40]
Khan Academy
Khan Academy: Centripetal Force and Acceleration Intuition
This video shows the direction of the force in cases of circular motion at constant speeds. Several examples of centripetal force in everyday life are given. [10:46]
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