Physics Lesson: Kinematics Acceleration Equations Part 1 Kinematics for High School

why do you call it ...
why do you call it delta time and delta displacement? it can be called change right?
BlGDlCKxDUBSTEP


Keep making these ...
Keep making these videos, they are great.
username6333


@AlexandtheUniverse ...
@AlexandtheUniverse Thanks for taking the time to let us know you liked our videos.
PhysicsEH


@mmacritics Thanks ...
@mmacritics Thanks for taking the time to let us know you liked our videos.
PhysicsEH


"Therefor, who ...
"Therefor, who cares about time." Made me smile a little bit. I bet all of the students learning from these teachers get straight A's. THANK YOU VERY MUCH!
mmacritics


Thank you very much ...
Thank you very much for all these videos! I was struggling with my physics homework and this helped me out very quickly! Much appreciated!
AlexandtheUniverse


I'm so glad i ...
I'm so glad i found you :) i have my physics exam on wednesday and i hardly know anything because my teacher just goes on, and on, and on, and on, about nothing that makes any sense xD You explain things so clearly :) thanks
Caaarrl94


can d means ...
can d means distance?
bat974rtiuo


if anyone needs ...
if anyone needs help with specific questions, send them to me for step-by-step solutions!
AnswerLeak


Can you explain ...
Can you explain equation number 5. i just don't get that one.
OHUHAHEH


You have no idea ...
You have no idea how much I love this guy right nowwww!!!! You explain everything so clearly!! :)
xcimena


Why do clever ...
Why do clever people always use a black board, when we have much better things like whiteboards?
ZerkosXD


Can you show me ...
Can you show me the proof to formula number 4?
Bakugantsuvai1


@SarahDemiFan If ...
@SarahDemiFan If you have all 5 then you can always find one that solves for what you need. If you use 4 then you may have to solve for one variable to use in another equation which means you need to use 2 equations. It may be a little more work but its not more difficult so 4 will work just fine.
PhysicsEH


@SarahDemiFan Hi. ...
@SarahDemiFan Hi. Yes sometimes it depends on the textbook you use so you may see some of our videos have different variables.
PhysicsEH


@PhsicsEH1 we use S ...
@PhsicsEH1 we use S= displacement and U= initial velocity
SarahDemiFan


Hi am from grenada ...
Hi am from grenada Caribbean and in my highschool we only use 4equations y is d reason u use 5 ??? (jus curious)
SarahDemiFan


@dfsauruguaya There ...
@dfsauruguaya There are 5 variables in the equations V1, V2, a, t and d. Each equation has 4 of these so if you are trying to figure out what equation to use you look at what you have (in this case V1, a, and t) and what you need (in this case d). This means one of the 5 variables is not in your "given" list or in your list of what you want (in this case the missing variable is V2) so you must choose an equation that does not have V2 in it or you will not be able to solve for d. hope this helps.
PhysicsEH


Thank you for the ...
Thank you for the explanation! Really helps, one question though; why did you look for the equation that doesnt have V2 in it? Thanks for your help.
dfsauruguaya


@silica61 Thanks ...
@silica61 Thanks for the comment. Glad we could help.
PhysicsEH


@silica61 If you ...
@silica61 If you get 2 times and they are both positive it measn that it is at that height twice. The first time is the one as the object is moving upwards and the second time is the one when it is falling back down to the ground. You would need to know if the object was thrown up and landed on the roof or if it hit the object on the way up. I think you would be given some information in the question to let you know. Hope this helps.
PhysicsEH


Thank you; simply ...
Thank you; simply understanding Physics makes it all the more enjoyable.
musiclover279


@PhysicsEH In a ...
@PhysicsEH In a situation where I use the Kinematic Equation x=vt +1/2(at^2) to solve for time and I get two positive values, how do I know which one is the right time?
silica61


@MsHomework123 ...
@MsHomework123 First line d=V1t +1/2at^2 Second line sub in d = 1000, V1 = 0, a= 0.333 so you get 1000=0t + 1/2 *0.333t^2 Third line the zero t becomes zero so 1000 = 0 + 0.1665t^2 Forth line 1000 = 0.1665t^2 Fifth line divide both sides by 0.1665 so you have 1000/0.1665 =( 0.1665/0.1665)t^2 Sixth line 6006 = t^2 seventh line take square root of both sides so Sq-root 6006 = sq-root t^2 Eight line 77.5 = t I hope this helps.
PhysicsEH


@MsHomework123 From ...
@MsHomework123 From my last email you have d=V1t +1/2at^2 so 1000=0 + 1/2 *0.333*t2 so multiply the 1/2 *0.333 you get 0.1665 so now you have 1000=0.1665t^2, you need to now get rid of the 0.1665 so divide both sides by 0.1665 and you get 6006=t^2, take the square root of both sides and t = 77s. Now you want to know how much time it won the race by. It took Car A 50s (from my last email to you) and 77s for Car B so Car A won by 77 - 50 = 27s. I think that works. I hope it helps.
PhysicsEH