Physics

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

Lectures

1. favorites

   Lecture 1 - Introduction to Motion Part 1

   Introduction to basic physics of motion. Introduces the concept of variable velocity/acceleration.

2. favorites

   Lecture 2 - Introduction to Motion Part 2

   More on how velocity, distance, acceleration and time relate to each other.

3. favorites

   Lecture 3 - Introduction to Motion Part 3

   Using the basic equations of distance and velocity to solve motion problems.

4. favorites

   Lecture 4 - Projectile Motion Part 1

   Using the equations of motion to figure out things about falling objects.

5. favorites

   Lecture 5 - Projectile Motion Part 2

   A derivation of a new motion equation.

6. favorites

   Lecture 6 - Projectile Motion Part 3

   An example of solving for the final velocity when you know the change in distance, time, initial velocity, and acceleration.

7. favorites

   Lecture 7 - Projectile Motion Part 4

   Solving for time when you are given the change in distance, acceleration, and initial velocity.

8. favorites

   Lecture 8 - Projectile Motion Part 5

   How fast was the ball that you threw upwards?

9. favorites

   Lecture 9 - Projectile Motion Part 6

   More on the ball throwing game.

10. favorites

    Lecture 10 - Projectile Motion Part 7

    How high did the ball go?

11. favorites

    Lecture 11 - Projectile Motion Part 8

    A little leftover from part 7.

12. favorites

    Lecture 12 - Projectile Motion Part 9

    Another example of projectile motion.

13. favorites

    Lecture 13 - Projectile Motion Part 10

    Some more examples with projectile motion.

14. favorites

    Lecture 14 - 2-Dimensional Projectile Motion Part 1

    Using vectors to solve 2 dimensional projectile motion problems.

15. favorites

    Lecture 15 - 2-Dimensional Projectile Motion Part 2

    More on 2 dimensional projectile motion.

16. favorites

    Lecture 16 - 2-Dimensional Projectile Motion Part 3

    Completing our first example from parts 1 and 2.

17. favorites

    Lecture 17 - 2-Dimensional Projectile Motion Part 4

    Another example of a 2-dimensional projectile motion problem.

18. favorites

    Lecture 18 - 2-Dimensional Projectile Motion Part 5

    The second part of the last projectile motion problem.

19. favorites

    Lecture 19 - Optimal Angle for Projectile Part 1

    Optimal Angle for Projectile Part 1.

20. favorites

    Lecture 20 - Optimal Angle for Projectile Part 2

    Optimal angle for a projectile part 2 - Hangtime.

21. favorites

    Lecture 21 - Optimal Angle for Projectile Part 3

    Horizontal distance as a function of angle (and speed).

22. favorites

    Lecture 22 - Optimal Angle for Projectile Part 4

    Optimal Angle for Projectile Part 4.

23. favorites

    Lecture 23 - Newton's First Law of Motion

    Introduction to newton's first law of motion. Inertial frames of reference.

24. favorites

    Lecture 24 - Newton's Second Law of Motion

    An introduction to Newton's Second Law of Motion.

25. favorites

    Lecture 25 - Newton's Third Law of Motion

    Intuition behind Newton's Third Law of Motion.

26. favorites

    Lecture 26 - Newton's Law Problem Part 1

    Examples of exercises using Newton's laws.

27. favorites

    Lecture 27 - Newton's Law Problem Part 2

    A couple of more examples involving Newton's Laws.

28. favorites

    Lecture 28 - Newton's Laws

    A problem involving a braking train.

29. favorites

    Lecture 29 - Newton's Laws and Vectors

    Using vectors to determine the horizontal acceleration when force is applied at an angle.

30. favorites

    Lecture 30 - Force with Vectors

    Another example of using our trigonometry skills to break up a force vector into its x (horizontal) and y (vertical) components.

31. favorites

    Lecture 31 - Introduction to Tension

    An introduction to tension. Solving for the tension(s) in a set of wires when a weight is hanging from them.

32. favorites

    Lecture 32 - Tension Part 2

    A slightly more difficult tension problem.

33. favorites

    Lecture 33 - Mass on Inclined Plane

    Finding the normal and parallel components of the gravitational force vector to determine the acceleration of a block down a frictionless inclined plane. See next video for correction on definition of normal force.

34. favorites

    Lecture 34 - Introduction to Friction

    Correction of definition of "normal force" and an introduction to the coefficient of friction.

35. favorites

    Lecture 35 - Friction on an Inclined Plane

    Calculating the acceleration of on object sliding down an inclined plane with friction.

36. favorites

    Lecture 36 - Complicated Friction/Inclined Plan

    Fun with two masses, some wire, a pulley, and a ramp with friction.

37. favorites

    Lecture 37 - Tension in an Accelerating System

    The second part to the complicated problem. We figure out the tension in the wire connecting the two masses. Then we figure our how much we need to accelerate a pie for it to safely reach a man's face.

38. favorites

    Lecture 38 - Moving Pulley Problem Part 1

    What happens when we pull on a pulley and the pulley is pulling on other things?

39. favorites

    Lecture 39 - Moving Pulley Problem Part 2

    Second part of what happens when we pull on a pulley.

40. favorites

    Lecture 40 - Introduction to Momentum

    What momentum is. A simple problem involving momentum.

41. favorites

    Lecture 41 - Momentum: Ice Skater Throws a Ball

    A simple conservation of momentum problem involving an ice skater and a ball.

42. favorites

    Lecture 42 - 2-Dimensional Momentum Problem Part 1

    An example of conservation of momentum in two dimensions.

43. favorites

    Lecture 43 - 2-Dimensional Momentum Problem Part 2

    We finish the 2-dimensional momentum problem.

44. favorites

    Lecture 44 - Introduction to Work and Energy Part 1

    Introduction to work and energy.

45. favorites

    Lecture 45 - Introduction to Work and Energy Part 2

    More on work. Introduction to Kinetic and Potential Energies.

46. favorites

    Lecture 46 - Conservation of Energy

    Using the law of conservation of energy to see how potential energy is converted into kinetic energy.

47. favorites

    Lecture 47 - Work/Energy Problem with Friction

    A conservation of energy problem where all of the energy is not conserved.

48. favorites

    Lecture 48 - Mechanical Advantage Part 1

    Introduction to simple machines, mechanical advantage and moments.

49. favorites

    Lecture 49 - Mechanical Advantage Part 2

    More on mechanical advantage, levers and moments.

50. favorites

    Lecture 50 - Mechanical Advantage Part 3

    Introduction to pulleys and wedges.

51. favorites

    Lecture 51 - Center of Mass

    Introduction to the center of mass.

52. favorites

    Lecture 52 - Introduction to Torque

    An introduction to torque.

53. favorites

    Lecture 53 - Moments Part 1

    Introduction to moments.

54. favorites

    Lecture 54 - Moments Part 2

    2 more moment problems.

55. favorites

    Lecture 55 - Unit Vector Notation Part 1

    Expressing a vector as the scaled sum of unit vectors.

56. favorites

    Lecture 56 - Unit Vector Notation Part 2

    More on unit vector notation. Showing that adding the x and y components of two vectors is equivalent to adding the vectors visually using the head-to-tail method.

57. favorites

    Lecture 57 - Projectile Motion with Unit Vectors Part 1

    Determining the position vector as a function of time.

58. favorites

    Lecture 58 - Projectile Motion with Unit Vectors Part 2

    Let's see if the ball can clear the wall.

59. favorites

    Lecture 59 - Projectile Motion with Ordered Set Notation

    Solving the second part to the projectile motion problem (with wind gust) using ordered set vector notation.

60. favorites

    Lecture 60 - Centripetal Acceleration Part 1

    Intuition behind what it takes to make something travel in a circle.

61. favorites

    Lecture 61 - Centripetal Acceleration Part 2

    More intuition on centripetal acceleration. A simple orbit problem.

62. favorites

    Lecture 62 - Centripetal Acceleration Part 3

    How fast does a car need to go to complete a loop-d-loop.

63. favorites

    Lecture 63 - Visual Proof: a= v^2/r

    Visual proof that centripetal acceleration = v^2/r.

64. favorites

    Lecture 64 - Calculus Proof that a=v^2/r

    Using calculus and vectors to show that centripetal acceleration = v^2/r.

65. favorites

    Lecture 65 - Introduction to Angular Velocity

    Angular velocity or how fast something is spinning.

66. favorites

    Lecture 66 - Conservation of Angular Momentum

    Angular momentum is constant when there is no net torque.

67. favorites

    Lecture 67 - Introduction to Newton's Law of Gravitation

    A little bit on gravity.

68. favorites

    Lecture 68 - Gravitation

    A little bit more on gravity.

69. favorites

    Lecture 69 - Spring and Hooke's Law

    Introduction to Hooke's Law.

70. favorites

    Lecture 70 - Potential Energy Stored in a Spring

    Work needed to compress a spring is the same thing as the potential energy stored in the compressed spring.

71. favorites

    Lecture 71 - Spring Potential Energy Example (Mistake in Math)

    A spring, a frozen loop-d-loop and more! (See if you can find the mistake I made and get the right answer!).

72. favorites

    Lecture 72 - Harmonic Motion Part 1

    Intuition behind the motion of a mass on a spring (some calculus near the end).