 here's our question okay now this is physics speed related question right the motorcycle so reposted question motorcycle is going at 200 miles per hour we're gonna do kilometers per hour so motorcycle is going at 321 kilometers per hour okay so here's a motorcycle you draw motorcycle here's a dude riding a motorcycle his legs are sticking like so dude we're hiding a motorcycle is going 321 kilometers per hour 321 kilometers per hour and the car is going at 160 miles per hour which is 257 kilometers per hour that's really fast for a car so car here's a car whoop actually a car motorcycle was behind the car so let's draw this properly so car is going at velocity is what is that 257 kilometers per hour 257 oops where's the seven 257 kilometers per hour and for those people who love miles 200 miles per hour 200 miles per hour which is insanely fast and 160 miles per hour for a car is pretty damn fast the motorcycle is 1000 feet 1000 feet or the equivalent of 340 meters right 300 304 meters not 40 four meters away from the car how much time in seconds will it take for the motorcycle to be next to the car when is the motorcycle gonna catch up to the car time equals question okay so whenever you're doing physics problems a really good idea to draw transfer all the information visually on your paper and get a feel for what the question is asking you okay first time chat Raven how are you doing welcome to our live stream first time chat Cheyenne hello how are you how are you doing good Cheyenne thank you very much and welcome to our live stream awesome people popped in Pawn is Armenian pastry similar to take Turkish pastry that's the best of how we have overlaps for sure we have overlaps for sure Pawn 300 321 mile kilometers per hour is the maximum speed on a straight of f1 pretty much really yeah this is like crazy fast that's like you go on this fast you better hope the wind's not blowing we learning some math we learning some math we learning some math so what you want to do is the motorcycle is a thousand me well 304 meters behind the sky so you want to find out when so initial situation is this initial let's draw this here's the motorcycle here's the motorcycle here's the car that's the initial condition 304 meters final condition is going to be motorcycle and the car both together right the motorcycle caught up to the car what's the best way to do this time we need our kinematics formulas let me bring out kinematics formulas i never memorized these kinematics formulas so we got four formulas where we're going to put this so we have enough room to deal with this stuff i'm going to put the formulas right here velocity final is equal to velocity initial plus 80 acceleration times time next formula distance final is equal to distance initial di plus velocity initial vi t plus one half t squared plus plus one half t squared t one half at squared i hope you guys see this is big enough for you guys to see yeah that's big enough for you guys to see one half at squared velocity final velocity final squared is equal to velocity initial squared plus to ad to ad or delta d changes in distance and distance final yeah sure let's write down that one too so distance final is equal to distance initial distance initial plus one half delta v t and delta v is change in velocity right change in velocity first time chat Aussie gaming i'm learning more than i learned in the school school system pretty much sucks centralized education system try to bamboo all we got try to bamboozle off with unnecessary unit conversion haha drassy first time chat ah yes physics physics chaps i wish i did too all i understand from this is the car drawing my car drawing you what do you mean you don't like my motorcycle motorcycle's pretty good miles per hour makes more sense instead of miles per hour yeah yeah m mph per hour for real for real you should do math tutorials more often i know i we're doing at least two a month sometimes three four a month but i have a lot of math videos out there i've got like hundreds of math instructional videos that i've made over the last 15 years and we're going to be doing a lot more math lifestreams by the way he does have a great way of explaining things right i try i try i try so check this out what do we need to calculate we need to calculate t time right but we need to do something else because we can't put the system together in one shot we need to what's the best way of doing this what's the best way of doing this oh we could do one thing we could do one calculation you guys want to do a do a sort of a if you think about this i think this should work by the way i think this should work okay i wouldn't convert everything feet per second watch this watch this so the motorbike is going at 321 kilometers per hour right the car is going as 257 kilometers per hour now think about this if they were both going the same speed then the distance between them is not going to close right if the motorbike is going slower than the car then the motorbike will never catch up to the car the distance between them is getting longer right or further apart but if the motorcycle is going faster than the car then all you really need to know to calculate is how much faster is the motorcycle going relative to the car because if they're both going the same speed the distance is not going to close so any extra speed that the motorbike can go faster than the car then really he's the motor the motorcycle is just catching up to the car at that speed it's relative so if you want to find out how fast the motorcycle is going to travel basically that's what you're asking how fast is the motorcycle going to travel 304 meters right with the speed differential so all you need to do is go 321 minus 257 because that's the speed difference between them goes once 114 to 116 so the motorcycle is going at 61 61 kilometers per hour faster than the car right first time viewer by followers primes and views on my followers primes views on pond if the car breaks really suddenly then the fastest thing in in the problem will be the right yeah because first of all the car the guy's now got his seat belt on he's going to go through the windshield and if the bike doesn't realize that this guy's braked this guy is going to hit the car and go right some people can fly though some people can fly breaks uh sunclover chicho will you have time to tackle my question yeah oh yeah because this is going to be really quick the interest rate i totally forgot about it sunclover thank you very much for bringing it up i feel like a potato 200 miles per hour me too go car so basically we're asking ourselves so bike oops not k biker biker biker is traveling 664 kilometers per hour faster than the car right so all you need to figure out is how long is it going to take the biker traveling at 64 kilometers per hour to travel 304 meters and that's one of these formulas right what do we need what do we need mm-hmm we don't have acceleration right so we don't need acceleration we can get rid of any formula that has acceleration right distance final distance initial change in velocity difference in velocity this is the formula we need right so distance initial we could put the motorbike at zero right distance oh sorry distance final we can put the motorbike at 304 304 meters distance initial is zero he's starting at zero meters plus one half change oh no no no we don't need this we just what am i doing we just need that's great i was thinking about something else so velocity is equal to distance over time that's all we need that's the only formula we need so distance is going to be uh sorry time is going to be distance divided by velocity distance is 304 meters velocity is 64 meters per second and units will cancel out right uh kilometers per hour and oh hold on a second this isn't meters this isn't kilometers per hour so we're going to convert 304 meters to kilometers which is going to be 0.304 kilometers divided by kilometers per hour so the units we're going to get out is hours so we're going to go boom it's okay 30 miles per hour equals 44 feet per second a fact i always remember cool cool so point zero sorry point three zero four divided by 64 is going to be point zero there we'll put it here point zero zero four seven five hours and if you want to find out how many seconds that is then you're going to go zero point zero zero four seven five hours times hours here in the bottom and minutes in the top one hour 60 minutes and then do the same thing multiply it by minutes same conversion we've done to seconds 160 so it's going to be point zero zero four seven five times 60 times 60 boop he's going to catch up in 17 seconds 17.1 seconds that's how fast it's going to be which is pretty good which is pretty good okay let's do the sorry if i went at the the last part of it i went crazy fast because totally forgot about the interest rate question okay um sun clover can you post your question again please that way i can read it instead of me having to scroll all the way up in the chat while i take this thing down okay i hope this makes sense that's the easiest way to do this calculation by the way just find the differential between them and plug it into velocity is equal to distance over time right and then do your cross multiplication you got your time