Thank you. I thought of another way to solve this problem, and I would like you to tell me if it’s another valid way or not. So since the deceleration can be thought of as “4 meters per second, per second”, we can figure out how much time it will take for the plane to get to 0 m/s, right? 68/4 = 17 seconds, then we can use the fact that delta x = v0t + (1/2)(a)(t^2), where t = 17 seconds, v0 = 68 m/s, and a = -4 m/s^2. The answer is also 578 m.
Thank you!!! I am 62...back.in high school days physics and.conceptual.mathematics were .two classes the content... I remember to this day The courses zapped my 4.00 to 3.78 something..but .it was.a challenge And pocket calculators can out the year. We.hsf "slide.rule accuracy, " and loved it ..
You just need to understand the question. I suggest you take a look at vectors and scalars. {runway} refers to distance. So you simply know that you will have to find the required distance for the plane to come for a full stop (Final velocity = 0)
I need help with my math homework I don't understand polynomials but I graduated with a GED regrettably, I would however like to understand basic algebra or pre-algebra.
please sir can you solve me 2 degree of free demo hexapod robot kinematics equation and each lege has 2 servo and total 12 servo for the whole legs for six legs 12 servo please
An easy way to remember this is to just know that when you are slowing down, the sign of acceleration will be the OPPOSITE of velocity. So in the question in the video, the velocity is 68 m/s. This is a positive number. They also say the plane is slowing down, so the sign for acceleration will be the opposite (-4 m/s^2). Same thing if you go in the opposite direction (towards the left). For example, if a question says that your object is moving at a velocity of 25 m/s to the left and that the object is slowing down at an acceleration of 5 m/s^2, your velocity would be negative (-25 m/s) because it is moving to the left. Your acceleration, however, would have the opposite sign, (+ 5 m/s^2) because it is slowing down, so it would be positive. This is just a quick memorization technique if the concept is a bit difficult to understand. You can also play around with some numbers to see how that works out. Hope this helps!
The tennis theory theoretical science of this is that when you're utilizing something have no weight on it whatsoever make it as light as the feather the rest of the body must be its brace if you can understand this good luck
Sir, you are AMAZING. I could not understand this in class which you explained beautifully!!!!!!!
Amazing video ! This helped a lot .
Thanks for the kind words Marcus!
Great video! If the plane landed nose-first like that though, probably is a whole new equation to describe where the all the bits go
Thank you so much! This helped!
Thank you. I thought of another way to solve this problem, and I would like you to tell me if it’s another valid way or not. So since the deceleration can be thought of as “4 meters per second, per second”, we can figure out how much time it will take for the plane to get to 0 m/s, right? 68/4 = 17 seconds, then we can use the fact that delta x = v0t + (1/2)(a)(t^2), where t = 17 seconds, v0 = 68 m/s, and a = -4 m/s^2. The answer is also 578 m.
Joseph Lee I knew the first of your equation but clueless to the second
Thanks
tanner953 I’m not sure if I understand your question. You mean the (1/2)(a)(t^2) part?
Joseph Lee Yes..I understand it though.
Thank you!!!
I am 62...back.in high school days physics and.conceptual.mathematics were .two classes the content...
I remember to this day
The courses zapped my 4.00 to
3.78 something..but
.it was.a challenge
And pocket calculators can out the year. We.hsf "slide.rule accuracy, " and loved it
..
Wait why did you divide at the end
Why is the plane's speed when it enters not ^2 & the slow down rate ^2 in the question?
thank you so much! this was super helpful and well explained!
Sir! How do you (we) know that the formula is the for distance.
You just need to understand the question. I suggest you take a look at vectors and scalars. {runway} refers to distance. So you simply know that you will have to find the required distance for the plane to come for a full stop (Final velocity = 0)
amazing video!!!
Thanks for the kind words Seema! Glad you liked it :)
I need help with my math homework I don't understand polynomials but I graduated with a GED regrettably, I would however like to understand basic algebra or pre-algebra.
Thank you bro you are insane
Could you do questions from the ukmt math challenge test (I think is is in the UK only)
is this a 1D or 2D problem?
Thank you so much 😊😊😊
Thank u
You're very welcome!
I have a question! Why is there no gravity in water if gravity holds everything down on earth including water?
Because things can be less or more dense than water......If you are talking about things floating or sinking in water.
please sir can you solve me 2 degree of free demo hexapod robot kinematics equation and each lege has 2 servo and total 12 servo for the whole legs for six legs 12 servo please
Why is it -4? How do you know which way
An easy way to remember this is to just know that when you are slowing down, the sign of acceleration will be the OPPOSITE of velocity. So in the question in the video, the velocity is 68 m/s. This is a positive number. They also say the plane is slowing down, so the sign for acceleration will be the opposite (-4 m/s^2).
Same thing if you go in the opposite direction (towards the left). For example, if a question says that your object is moving at a velocity of 25 m/s to the left and that the object is slowing down at an acceleration of 5 m/s^2, your velocity would be negative (-25 m/s) because it is moving to the left. Your acceleration, however, would have the opposite sign, (+ 5 m/s^2) because it is slowing down, so it would be positive.
This is just a quick memorization technique if the concept is a bit difficult to understand. You can also play around with some numbers to see how that works out. Hope this helps!
Nafisah Hashami Thank You very much! Just savee me from a quiz!
Amazing teacher!
thanks for helping
bro I'm newton fan
The tennis theory theoretical science of this is that when you're utilizing something have no weight on it whatsoever make it as light as the feather the rest of the body must be its brace if you can understand this good luck
It's a brief intro into tennis the konnetics
i keep getting 67.9 please someone explain.....
Thanks!
thank you
Think very much
ur awesome.
GODBLESS...I AINT GOT PAST FRACTIONS...OWEL
Great teacher thanks friend.
You're welcome Rick! Thanks for the kind words!
How did you get 4624 from (68)square?
pretty sure he meant 68 to the power of 2.
1st comment
My mom made me watch this ;-;
Am not good in math it's difficult help me
hi.. I sent you a question and I still haven't gotten an answer
Does this person still exist??!
Please stop selling your services. It becomes pushy sales tactics.
Easy to do, hard to understand.
What is this
Watches a math video hoping to understand how to do the math only for him to skip the actual part where you do math. SMH
boring
thank you!