More on Newton's second law | Physics | Khan Academy

[@marinamedinaa]

Physics is really hard for me but the vectors surprisingly make sense to me. So this broken down really helps. Thank you!

[@cementtable326]

E

[@Lands8142]

I appreciate the breakdown of the Law and how to apply it. However, it is not beneficial to students new to the application of the concept if you say "you could then solve this" without providing the answer. That is part of the reason why people are coming to Khan Academy. So they can receive instruction that is better than their teachers at school. However, I feel this teaching style is exactly the same as at school. The only benefit is that you can pause and rewind. I just wish I could pause, solve it myself, and then play the video to verify my answer. Instead, I pause, solve, and the question is changed and my answer is no longer valid. Doesn't help practicing the basics if I don't know if my answer is right... Not that I don't appreciate the help in understanding the topic. I love these videos. Please keep them coming! Just a little frustrating to have little to no practice of concepts. Just lecture on theory.

[@tabarakaljemelawy3581]

I agree with your opinion I swear!

[@iconic410]

That's true

[@G-Tarun]

Physics practice is on Khan Academy now! High School Physics old and High School Physics NGSS have practice. I like the NGSS practice with the old videos - powerful combination for mastering the core ideas.

[@seanpaulson9098]

they are assuming you have done the prerequisites

[@penguinlord-yt9xc]

I agree completely

[@xannianangel3570]

i started understanding it but when he started discussing the Pythagorean theorem i was like "david mah boi, slow down"

[@beoptimistic5853]

kzbin.info/www/bejne/joKsk6FobMmCoKc 💐💐

[@furyjaguar8034]

Lol

[@G-Tarun]

Khan Academy also has instruction and practice on the Pythagorean theorem!

[@jasonthomas9975]

LOL

[@thanaa6401]

Slow down the video

[@atkiiaa]

Idkw I found this dude very formally humorous like I just laughed so hard when he said 'you can't just simply, NAIVELY add up............and expect to get the right answer' lol

[@simranjoharle4220]

wow.......this gave me a new view to look at the second law.....thanks a lot!

[@abhishekpandey9049]

Love your voice dude.... Really..an attractive voice :)

[@beoptimistic5853]

kzbin.info/www/bejne/joKsk6FobMmCoKc 💐💐

[@supb1437]

I wish he solved the individual equations first BEFORE throwing a new Force into the problem just so I could correct my answers. Made everything confusing.

[@sparshgupta4762]

I’ve watched some of your lectures, why don’t you guys make an app and probably a website for this ??

[@dc5189]

Great explanation! Ty

[@hayleygibbs647]

Awesome! This is the first video where I've heard your voice I think :)

[@fashionvella730]

Very very nicely explained.

[@tabarakaljemelawy3581]

I actually learn everything and they make it so much easier than the teachers that I have.

[@leledalion9751]

Yep

[@walkingthruyourdata-6019]

great courses! thank you!

[@MrRavindraprasad]

Excellent sir

[@dlu0813]

We can use our knowledge of 30-60-90 triangles for the horizontal F_7 vector.

[@c.u.z.o.n.e4397]

Please the same way you put the vertical acceleration and horizontal acceleration into PYTHAGORAS to find the total acceleration can't you do the same with the forces

[@vvvcc7]

Can't we just create a new sum of forces for the force at an angle?

[@vvvcc7]

Oh never mind, we don't know if the value is positive or negative. My bad.

[@thanaa6401]

Actually you can. You would just create a new axis and you can make the positive and negative conventions whatever you like em to be. But this axis will be separate from the vertical and horizontal axis . In the end, you'll have 3 acceleration vectors so you will add them all up to get the net acceleration. But it's generally easier to break down all the "sloped" lines to their vertical and horizontal components so we would only add two acceleration vectors.

[@iconic410]

The asteroid ends up having an acceleration of 5.71 m/s2 at an angle of 132.94degrees off the x-axis

[@beoptimistic5853]

kzbin.info/www/bejne/joKsk6FobMmCoKc 💐💐

[@sultanhumaid2651]

Supercalifragilisticexpialidocious.

[@WhiteFontStudios]

And it turns out you cannot do that lol 6:29

[@Thumb_Spirit]

Seriously, is that's how you teach simple by just complicating the stuffs as much as possible.

[@hell7092]

what is vector force I didn't understand it properly

[@advaithpradosh303]

force in a particular direction

[@beoptimistic5853]

kzbin.info/www/bejne/joKsk6FobMmCoKc 💐💐💐

[@thanaa6401]

Revise "Vectors" unit in the precalculus playlist

[@Thumb_Spirit]

Stop Complicating with all bunch of concept you know to show off you are genius. Lern from Chat GPT. To make it simple.

[@gberrydopeboy8539]

Is this for 5year olds

[@thanaa6401]

Sure they can understand it easily

[@ShivaniSingh-rf4dv]

It's good that you're trying to explain that in real life vectors act on an object from different directions, rather than horizontally etc. However, because you keep adding vector after vector without solving each example, the end answer is wrong. For instance, acceleration from +25 - 40 +50 -30 should be 5, not 10 however because it was not solved in the first place, 10 got plugged in another example which makes that answer wrong. So overall this video provides clear explanations of how to calculate the acceleration when vectors act on an object from different directions, but because vectors keep getting added to explain this concept, the page becomes messy and the end answer isn't right.

[@beoptimistic5853]

kzbin.info/www/bejne/joKsk6FobMmCoKc 💐💐💐

[@zayadalsalman1193]

you made it very hard to me there is a different way to solve this problem not only in this way:( you were using a lot of numbers in this example and that is wrong because how can I release what is the forces if I just see this law for the first time in my hole life :(

[@fortimusprime]

Use The Force Student.

[@beoptimistic5853]

kzbin.info/www/bejne/joKsk6FobMmCoKc 💐💐💐

[@thanaa6401]

This is the creepiest comments section for a video i've ever seen

[@Frederick-111]

How so?

[@Thumb_Spirit]

Why you are clearly confusing instead of explaining.

[@tonyhill2318]

I miss Sal. This was not great....cluttered, too much irrelevant side comment. This needs to be better.

[@huntergirl7275]

...pronounced "seculaw" according to this guy... 🙉 This is killing me by ocd death.

[@Nora-dx9cy]

man what happened to your voice🤨

[@ficopoki164]

First hahaha What grade is this physics?

[@nirmitbatavia8192]

Lucky Louke go to hell u don't even know that why u r here

[@satvikverma681]

i suppose 11th grade coz some of this stuff is in my textbook as well

[@lycalandicho1958]

Satvik Verma. bu-bu-but, we had this in 8th grade.

[@Yashraj100x]

@@lycalandicho1958 You don't know the education here in India is stupid... They teach shit till 10th grade and rocket science from 11th

[@hxn1_]

@@nirmitbatavia8192 Chill Bruh