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Kinematics in One Dimension Practice Problems: Constant Speed and Acceleration

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The Physics Teacher

The Physics Teacher

Күн бұрын

Пікірлер: 46
@onkarabileletsweletse879
@onkarabileletsweletse879 Жыл бұрын
there is a mistake on the second question i think you forgot to square the time because the equation is such that s=ut+1/2(a)(t)^2
@tselamashinini1450
@tselamashinini1450 Жыл бұрын
Yessssss u ryt onkarabile
@jansy7248
@jansy7248 4 ай бұрын
definitely, thank you for confirming my confusion
@haajermonir3936
@haajermonir3936 3 жыл бұрын
hello teacher I. think that the ans in min 16:57 should have been 26.1. because the d=0.5at but t should be squared
@__Joki__
@__Joki__ 3 жыл бұрын
I agree, if you plug it into the other formula as well the answer comes out to 26.1
@eldcole7440
@eldcole7440 3 жыл бұрын
my answer is 26.1 too. I thought i was wrong until i read your comment
@khokha3348
@khokha3348 2 жыл бұрын
why he didnt use the formula s: equals d/t
@haveacupacapuccino4834
@haveacupacapuccino4834 2 жыл бұрын
he forgot th square
@warsma9857
@warsma9857 2 жыл бұрын
@@haveacupacapuccino4834 I think he used d=1/2(v0+vf)t formula
@saifaltaee3301
@saifaltaee3301 Жыл бұрын
for question 2 you have t^2 so it should be 26.1m if that's right ?
@-ro1655
@-ro1655 Жыл бұрын
Yeah since he forgot the power 2 on the original equation so 1/2at^2 giving 26.071 approx 26.1
@djdenzley8648
@djdenzley8648 2 жыл бұрын
There's a mistake with the second question in the second part It's supposed to be d=a(t×t)÷2
@SlaveOfAllah1000
@SlaveOfAllah1000 6 ай бұрын
what is the relative velocity thing you did for problem 6 ? I dont get it.
@avocatious6402
@avocatious6402 7 ай бұрын
I like the way your voice sounds
@avocatious6402
@avocatious6402 7 ай бұрын
thank you for the lovely video too btw. just wanted to mention ^
@elijahcox8085
@elijahcox8085 2 жыл бұрын
For the bicycle problem Vi=10m/s D=780m A= 0.1m/s^2 and T= 60s. I get different final velocities depending on the formula used. For D=1/2(vi+vf)t I get 19.33, but for vf=vi+at and vf^2=Vi^2+2ad I get 16. What am I doing wrong?
@elijahcox8085
@elijahcox8085 2 жыл бұрын
I was looking for the speed of the initial rider btw.
@hetanshbhuta6342
@hetanshbhuta6342 11 ай бұрын
I think the answer should be 16 cause Vf for driver 1 is the Vo for 2. So if you just find that then you can calculate for the Vf for driver 2. Then you can just plug everything in the formula Vf = Vo +at, Vf = 10 + 0.1*60, Vf = 16
@gammersunity4117
@gammersunity4117 5 ай бұрын
I got the same answer as well.
@zekiaydinli1393
@zekiaydinli1393 Жыл бұрын
sir which chapters do i need to know from physics 1 to do physics 2?.. i use the book (physics for scientists and engineers with modern physics 8th).. do i need to know all 23 chapters form physics 1 respectively in order to do physics 2 or just a small bunch of it?
@user-tp8eq6dg8s
@user-tp8eq6dg8s 6 ай бұрын
I thought maybe for the part where the trains are travelling in same direction , we should say time to catch the slower train is found by using only speed of faster train and distance apart
@yeisakseid
@yeisakseid Жыл бұрын
i love this explanation its help me every time
@dumlaogideonashleyq.6277
@dumlaogideonashleyq.6277 3 жыл бұрын
In 34:47 its should be t = 4 hours.
@dumlaogideonashleyq.6277
@dumlaogideonashleyq.6277 3 жыл бұрын
That's why you need to put your units.
@tayburrahmanchand
@tayburrahmanchand 8 ай бұрын
@@dumlaogideonashleyq.6277 you are right
@user-tp8eq6dg8s
@user-tp8eq6dg8s 6 ай бұрын
You know your stuff❤❤
@abrahamantonio2689
@abrahamantonio2689 Ай бұрын
Is not it that the trains meet after 4 hours?
@funnyshorts6564
@funnyshorts6564 Жыл бұрын
for the bus and car problem, the bus has constant speed not acceleration, so should be d=vt
@nosihleprecious59
@nosihleprecious59 3 жыл бұрын
great help,thank you
@codewithme2516
@codewithme2516 8 ай бұрын
In the second Question the time must be squared and the correct formula is s = ut + (1/2)at²
@user-tp8eq6dg8s
@user-tp8eq6dg8s 6 ай бұрын
Life saver😊
@mpumelelomgobhozi
@mpumelelomgobhozi 8 ай бұрын
For problem 2 can you use d=1/2(Vo+Vf)t as the equation instead?
@mpumelelomgobhozi
@mpumelelomgobhozi 8 ай бұрын
I discovered that it is actually easier and you won't make the same mistakes he did
@khokha3348
@khokha3348 2 жыл бұрын
21:00 the acceleration is not constant so we cant use the formula Vf_Vi = 2ad
@shahidjavedkalair8165
@shahidjavedkalair8165 3 жыл бұрын
Great help
@Ester-ep9ob
@Ester-ep9ob 23 күн бұрын
4s I thought should be in 4h
@SenzoDzanibe-ey4yn
@SenzoDzanibe-ey4yn 5 ай бұрын
i don't understand the last question it's not clear like the other ones but great job
@Dr.ashutoshmishra
@Dr.ashutoshmishra 4 жыл бұрын
Hello, I would like to Collab with you sir
@fevenzeray1335
@fevenzeray1335 3 жыл бұрын
Great but at some point the questions are not visible i mean like being blurred
@stevengallego7332
@stevengallego7332 Ай бұрын
bruhhh r u fr in the second question??? 4.5 meters in a span of 5seconds???????
@LikesNobody
@LikesNobody 3 жыл бұрын
This train problem at 34min... two trains that are 600 miles apart? really 4s? they mu st be worlds fastest two trains
@jasonli3959
@jasonli3959 2 жыл бұрын
he meant 4 hr
@yasminamin2166
@yasminamin2166 Жыл бұрын
What is this subject?😵
@gammersunity4117
@gammersunity4117 5 ай бұрын
@etgsuryoutube8476 lmao
@windowseatmine
@windowseatmine Жыл бұрын
mistake in second question
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