Physics - Basic Introduction

This video tutorial provides a basic introduction into physics. It covers basic concepts commonly taught in physics.

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Physics PDF Worksheets:

Kinematics Formula Sheet:

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[ItmeP]

he literally explained speed/velocity and distance/displacement in 20 minutes, I need him to be our physics teacher, right now

[Relic]

0:30 Distance and Displacement
-
6:42 Speed
10:16 Speed and velocity
13:30 Average speed and Average velocity
-
18:39 Acceleration
-
29:15 Gravitational Acceleration
-
37:47 Projectile motion
-
47:11 Newton's 1st law
51:33 Newton's 2nd law

[hike]

Notes for this video i made:- use them for studying i only write stuff to memorize the concept but it just turns into notes after like 5 minutes
displacement = Pf - Pi
distance is scalar quantity
displacement is vector quantity


Distance = speed x time
(d=Vt)
but
Displacement = Velocity x Time

|Speed|
scalar + positive (magnitude only)
|Velocity|
vector + positive or negative (vector quantity/magnitude + direction)

.'. speed is always positive
velocity is positive OR negative


important formulas regarding speed and velocity




Average speed = total distance
.'. v=d/t (speed in this case)
total time
/
average velocity = displacement/ time
/

acceleration = ΔV / Δt OR Vf-Vi / t

anytime velocity is positive it means acceleration is increasing
anytime velocity is negative it means acceleration is negative

a=+ means V▲
a = - means V▼

[final velocity = initial velocity + acceleration + time
Vf = Vo +at]


gravitaional acceleration of earth = -9.8 m/s² (gy)
gravitaional acceleration of moon = -1.6m/s² (gm)


since its negative it means it either is in the negative quadrants
and its vertical so its y axis below

▲
|
|-2
|
|-1
|
►
-4 -3 -2 -1 | 1 2 3 4
|
|-1
|
|-2
▼


Newton's First Law of Motion

An object in motion will continue in motion unless acted on by a force.
{important forces- Tension(rope, string, chain XpullingX )}
[[best time stamp to learn this concept 48:00]]


Newton's Second Law of Motion

F = ma
\\Fnet means the sum of all forces\\

summation or sigma (pronounciation) :- ∑

net force in y direction ∑ Fy = m x ay
net force in x direction ∑ Fx = m x ax
L Fnet = m x a L
(m means mass and a means acceleration)

Note:- Always write acceleration m/s^2
with the square for s


Timestamps for this video:-
0:30 Distance and Displacement
-
6:42 Speed
10:16 Speed and velocity
13:30 Average speed and Average velocity
-
18:39 Acceleration
-
29:15 Gravitational Acceleration
-
37:47 Projectile motion
-
47:11 Newton's 1st law
51:33 Newton's 2nd law



welp i cant get members only acces but im pretty sure its most likely just questions for laws of motion and dont worry cuz theres a literal chapter called laws of motion comin real soon

[Titanium]

This literally is the first time in my life I actually understand a physics class. Congratulations! You rejuvenated me!

[A]

you have taught me more in 53 minutes than my physics teacher has taught me in a year. thank you.

[momenakhatoon]

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[diapherotrites]

College starts soon, and I want to refresh and wrap my head around physics before starting the preparatory year. I’ll do this for biology, chemistry, and math too! This video is very helpful, thank you very much!!

[edwardtran]

This man taught me more in 20 minutes than my teacher did in 1 week. Huge applause to you. Please keep it up. We NEED people like you in the YouTube community!

[pbugo]

Taking physics this upcoming fall semester. Have zero idea about what I'm getting myself into & I'm shaky in math. I figured I'd get a head start. Thank you!

[everythingabouteverything]

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[mjmasapequena]

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[akuma]

I had to take physics in the middle of my term 2, this video has been a life saver, thank you so much.

[aramirez]

This will save someone's semester early if they see it right now.

[abdelmagedhady]

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[randytchouassi]

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[MisterDoge-]

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[nicolasherbasmunoz]

That moment when you learn more in YouTube for free than your professors

[roshawn]

I was always afraid of physics. Now I’m learning. This is awesome.

[Venusearth.]

The existence of this channel made me question the purpose of our physics teacher.

[emmi]

im teaching myself physics because i’m bored 😞😞