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/sci/ - Science & Math

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File: 360 KB, 2420x933, Biology Evo Tree.gif [View same] [iqdb] [saucenao] [google]
1859115 No.1859115 [Reply] [Original]

a hockey puck leaves a players stick with a speed of 9.9m/s and travels 32m. what is the coefficient of friction between the puck and the ice?
wtf how am i suppose to find the coefficient when im not given the mass, the normal force, or the force applied to the puck???? How does velocity and the distance traveled help me

pic semi related, /sci pasta

>> No.1859143

Energy.

>> No.1859167

pic saved, not doing HS physics right now, not interested.

>> No.1859176

Everything you don't know will cancel.

<span class="math">x = \frac{v_f^2 - v_o^2}{2a} => a = \frac{v_f^2 - v_o^2}{2x}[/spoiler]
<span class="math">F_{net} = ma[/spoiler]
<span class="math">F_f = F_N * \mu = mg\mu[/spoiler]
<span class="math">F_{net} = F_f => mg\mu = ma => \mu = \frac{a}{g}[/spoiler]
<span class="math">\mu = \frac{\frac{v_f^2 - v_o^2}{2x}}{g} => \mu = \frac{v_f^2 - v_o^2}{2xg}[/spoiler]

>> No.1859183
File: 963 KB, 1051x1404, Biochem and Mole. Bio.jpg [View same] [iqdb] [saucenao] [google]
1859183

>>1859167
but its trig based college physics...

>> No.1859188

>>1859115
New tattoo

>> No.1859189
File: 13 KB, 250x314, confused.jpg [View same] [iqdb] [saucenao] [google]
1859189

>>1859176

>> No.1859197

>>1859183
High school physics
seriously.
I did this in high school.
as did everyone else who took physics in my high school.
and let me tell you, I did not go to the greatest high school.

>> No.1859203

>>1859183
Really? Plant metabolism?

>> No.1859215

>>1859189
There should be nothing confusing about what I did. I didn't leave out steps.

>> No.1859216

wow look at all those species. Evolution is awesome.

>> No.1859226
File: 1.39 MB, 3673x2249, Biosynthesis.png [View same] [iqdb] [saucenao] [google]
1859226

>>1859203
Yes

>> No.1859235

>>1859226
I don't recognize that one. Metabolism of some sort....