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

Жыл бұрын

Yessssss u ryt onkarabile

@jansy7248

3 ай бұрын

definitely, thank you for confirming my confusion

what is the relative velocity thing you did for problem 6 ? I dont get it.

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?

There's a mistake with the second question in the second part It's supposed to be d=a(t×t)÷2

i love this explanation its help me every time

great help,thank you

for question 2 you have t^2 so it should be 26.1m if that's right ?

@-ro1655

Жыл бұрын

Yeah since he forgot the power 2 on the original equation so 1/2at^2 giving 26.071 approx 26.1

21:00 the acceleration is not constant so we cant use the formula Vf_Vi = 2ad

Hello, I would like to Collab with you sir

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__

3 жыл бұрын

I agree, if you plug it into the other formula as well the answer comes out to 26.1

@eldcole7440

3 жыл бұрын

my answer is 26.1 too. I thought i was wrong until i read your comment

@khokha3348

2 жыл бұрын

why he didnt use the formula s: equals d/t

@haveacupacapuccino4834

2 жыл бұрын

he forgot th square

@warsma9857

2 жыл бұрын

@@haveacupacapuccino4834 I think he used d=1/2(v0+vf)t formula

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

2 жыл бұрын

I was looking for the speed of the initial rider btw.

@hetanshbhuta6342

10 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

4 ай бұрын

I got the same answer as well.

For problem 2 can you use d=1/2(Vo+Vf)t as the equation instead?

@mpumelelomgobhozi

7 ай бұрын

I discovered that it is actually easier and you won't make the same mistakes he did

You know your stuff❤❤

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

Is not it that the trains meet after 4 hours?

In the second Question the time must be squared and the correct formula is s = ut + (1/2)at²

for the bus and car problem, the bus has constant speed not acceleration, so should be d=vt

I like the way your voice sounds

@avocatious6402

6 ай бұрын

thank you for the lovely video too btw. just wanted to mention ^

Life saver😊

Great but at some point the questions are not visible i mean like being blurred

Great help

i don't understand the last question it's not clear like the other ones but great job

In 34:47 its should be t = 4 hours.

@dumlaogideonashleyq.6277

3 жыл бұрын

That's why you need to put your units.

@tayburrahmanchand

7 ай бұрын

@@dumlaogideonashleyq.6277 you are right

This train problem at 34min... two trains that are 600 miles apart? really 4s? they mu st be worlds fastest two trains

@jasonli3959

2 жыл бұрын

he meant 4 hr

bruhhh r u fr in the second question??? 4.5 meters in a span of 5seconds???????

What is this subject?😵

@gammersunity4117

4 ай бұрын

@etgsuryoutube8476 lmao

mistake in second question