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Physics 101: Friction

20 minutes 24 seconds

Now Playing As: Captioned (English) (change)

Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces. In this episode, host Dianna Cowern demonstrates how to solve problems involving friction. Part of the "Physics 101" series.

Media Details

Runtime: 20 minutes 24 seconds

Aerial closeup of 2 arms in light blue sleeves over a paper. The right hand writes on a large sheet of paper with a thick black marker. The paper reads, "Equation of motion. Y equals Y sub 0 plus V sub 0, T plus 1/2, A, T sup to the power of 2."
Physics 101
Episode 2
22 minutes 45 seconds
Grade Level: 10 - 12
Aerial closeup of 2 arms in black sleeves. The right hand writes on a large sheet of paper with a thick black marker. The paper reads, "tangent equals opposite over adjacent (tan). S, O, H, C, A, H, T, O, A. 1." There's a diagram of a 37.5 degree angle and an directional axis labeled N and E.
Physics 101
Episode 0
12 minutes 30 seconds
Grade Level: 10 - 12
Dianna wears a navy shirt with red, yellow, and pink stripes on the wrists and shoulders. She sits behind a large piece of paper and holds a black marker. A colorful background with science items on a shelf is behind her, and equations appear on screen.
Physics 101
Episode 3
22 minutes 53 seconds
Grade Level: 10 - 12
Aerial closeup of 2 arms. The right hand uses a thick black marker to write various physics equations on a large sheet of paper.
Physics 101
Episode 4
23 minutes 6 seconds
Grade Level: 10 - 12
Man is suspended in the air by a clump of large balloons over a crowd of people. There are multiple desert towers and rock features in the distance behind them. Text on screen reads, "David Blaine," with an arrow pointing to the man.
Physics 101
Episode 5
24 minutes 34 seconds
Grade Level: 10 - 12
Man wearing a gray winter hat, a dark gray hoodie, black snow pants, and red gloves snowboards down a snowy ski slope on a foggy day. A yellow snow making machine and a little building with a red roof are nearby.
Physics 101
Episode 6
20 minutes 24 seconds
Grade Level: 10 - 12
A C, G, I graphic of a spaceship made in the shape of a planetary ring rotates around a brown planet. The side closest to the planet looks like oceans with clouds and green continents, and the other side looks like a spaceship with glowing lights.
Physics 101
Episode 7
25 minutes 48 seconds
Grade Level: 10 - 12
Still image from: Physics 101: Gravity and Orbits
Physics 101
Episode 8
25 minutes 58 seconds
Grade Level: 10 - 12
Aerial closeup of 2 arms wearing denim sleeves with white stars. The right hand uses a large black marker to write on a large sheet of paper. The paper reads, "Energy and work" and has various physics equations.
Physics 101
Episode 9
28 minutes 3 seconds
Grade Level: 10 - 12
Aerial closeup of 2 arms. The left has a pink sleeve, the right has a red sleeve and uses a black marker to write on a large sheet of paper. The paper shows an X, Y axis with Y axis labeled Force in Newtons and X axis labeled X in meters. Next to this, a drawing that looks like a spring coil.
Physics 101
Episode 10
25 minutes 51 seconds
Grade Level: 10 - 12
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