A Tesla traveled 5 miles in 3 minutes - how fast is it going (mph)?
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- Опубліковано 20 гру 2021
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How fast is a Tesla? math problem to determine speed of a Tesla. For more math help to include math lessons, practice problems and math tutorials check out my full math help program at tcmathacademy.com/
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There are 20, 3 minute segments in an hour. 5x20=100 mph.
that's how I did it as well.
That’s exactly how I did it. He lost me a few times
100 mph
20 * 3 minutes equals an hour
20 * 5 equals 100
There's a lot of ways to express this. In my head, I for some reason did it this way...
a) 3 miles in 3 mins at 60 mph
b) 5 is 2/3 more than 3.
c) 60 mph + 2/3 more is 100 mph
My problem is, as soon as I saw the question I knew the answer. However I don’t know how I arrived at the answer, and can’t apply the technique to all problems.
Happened upon this and multipied by 60 min/hr but decided to look at your video to see why it took almost 17 minutes. It is a great explaination of the rate/time/distance problem. Very well done.
The REAL question is: How far did this Tesla travel before having to be recharged for six hours?
How far did it go before it caught fire and blew up?
69,420,911 miles
It didn't get to the recharge station because a sheriff's deputy stopped the driver, gave him/her a ticket and had the car impounded.
Thank you for these simplified and detailed Lessons, helps a lot
It was NOT simplified. It was stupidly complicated. Here's simple.
Sixty minutes divided by 3 is 20. Twenty multiplied x 5 is ... 100.
Simplified, are you kidding me. He took 16 mins to explain a simple thing. He would drive children away from maths. I was getting fed up watching & i had already worked it out my way. Had i had him as my school teacher i would have really struggled in maths.
Thanks again for the clear concise illustrations!
I enjoyed it- took me 2 seconds. (60/3)*5=100. The question is inaccurate however; 100mph is the average speed over the 5 mile run.
We can’t know how fast it IS going without a lot more information.
An incredibly simple problem is made complicated, and dragged out for 16 minutes. If you go x miles in 3 minutes, you have to multiply 3 by 20 to get 60 minutes. So 20 times x is the number of miles per hour. 20 times 5 is 100 miles per hour.
You are correct with assumptions made, from the time of commencement of recording time and distance velocity was uniform. Standing start would mean slightly over 100mph as had to get up to speed.
@@johnstorrie3635 I'm making the same assumptions the video guy is making. It need not be uniform velocity; it could be average velocity.
You try viewing all his videos and instead of explaining it simply to be easily understood, he makes it more complicated by adding extraneous info that is not really needed. You'll really get frustrated with his teaching style.
@@rap3208 Waste of time.
@@rap3208 He could not possibly make a single dime if he explained it quickly. If you like the guy and or just want to support him click on his work and either watch it or set your phone down and let it play out.
You help me solve a problem that I was having difficulty and couldn’t find any videos to help me. Thank you!
You need to simplify for your students. You go the long way about everything. 3/60= .05. All the students need to understand is that if either R or T is unknown, it becomes a division equation.
He has to fill all the time for the class period for one problem. All his videos he demonstrates how he loves to hear himself talk and tell himself how smart he is to the rest of us. He also demonstrates the failure of schools!
@@stanleybaehman7214 I agree with you. I had 2 Math teachers just like him in Junior High. He would say, "If you don't understand, then you're an idiot." We weren't idiots. He was just a terrible teacher. I later got all A's in college in Math and graduated as Summa Cum Laude.
The answer might depend on whether the owner is about to run out of battery power and is suffering EV distance anxiety which is common with EV owners and is desperately searching for a charging station.
People that don't own evs have range anxiety. Once you own one you get distance awareness and most of the time you charge at home while you sleep.
@@jenkinseric2 You have it backward. Range anxiety is a real emotion that came about with the EV, not the ICE. If they happen to have a charger at home they can do it there but many do not. It all takes planning where as the ICE driver pulls into a gas station and they're on their way in 5 minutes and they don't have to wait in line at a charging station. Another problem at the charging stations is that since it takes about an hour to charge up people will go get something to eat or shop nearby and leave their vehicle taking up a space someone else could use so people often end up having to wait in line to even begin to charge which has led to a lot of charging station rage.
These are real problems in the real world that have been happening to real people. Since the rise of popularity of the EV.
@@fredflintstone8048 ev are getting popular? Where?
@@OUSoonr1981 Depends on what you mean by popular. If you're asking if more and more people are buying them, that's an easy YES. I'm seeing them more often. More Teslas in driveways, on the road, and the other makers EV too. If you mean by popular they're becoming the dominant vehicle on the road, then NO.
Simple, just ask how many times 3 goes into 60 to get per hour, multiply both sides by that amount, 20, and you get 100 mph.
Greetings. The car is traveling at the breakneck speed of 100 MPH. Using the formula D=VT in which D equals distance covered, V equals velocity in MPH, and T equals time taken to cover the distance travelled, we have 5 =3/60V MPH, and V=5×20 MPH. 3/60 represents the conversion of minutes to hours.
Surely it is simpler to divide 60 minutes by 3 minutes and multiply the answer by 5 giving 100 miles per hour
If the car was a Yugo, it would be a trick question. A Yugo won’t go over 5 miles without a major repair
A Yugo?? Man, how old are you?? LOL!! A girlfriend in College had a Yugo in the early 80's and the passenger door fell off. I swear it looked a bent nail was the only thing holding the door in place. Needless to say, I never got in it again!! LOL!!
He must be from California. 🤔
@@OUSoonr1981 Alabama dipshit
I did on my head: 5 miles in 3 minutes and 3 minutes into an hour which has 60 minutes equals 20. Hence the miles per hour is 5 x 20 = 100
This is an even easier way to solve the problem: 5 miles divided by 3 is the same as 10 miles divided by 6. 1 hour is 60 minutes which is 10 times more than 6. So therefore 10 miles also have to be 10 times bigger ie 100! 10/6 = 100/60. 100 miles/ 60 minutes.
It's going 5mi/3minutes. Simple as that. A+
Exactly. Students should recognize a unit conversion problem and the principle
of multiplying by an identity. A better question would state that assuming the speed (rate) is constant, how far could the car travel in 3 hours.
@@executivedysfunction Well said!
You forgot this part: (mph)? So, F-.
I wanna know who drew that picture. Kudos.
Solved the equation in my head in less than 10 seconds and ive never taken math notes made it all the way in to college without notes
The question is poorly stated. It contains two elements that are not asserted to be related.
"A Tesla traveled 5 miles in 3 minutes" That's nice.
"how fast is it going (mph)?" I have no idea how fast it is going RIGHT NOW. Nor even the instantaneous speed at any point during the 5 mile run.
If you asked, "What was its averaged speed during that run" the problem becomes simple. It might have gone 80 mph for a while and then 120 mph for a while but the average is simply distance/time. miles/hours or 5/.05 = 100.
i used to know the answer, but with the Tesla all bets are off. probably best to just look in the data logs and see how fast it was going. probably 140mph for about 1 minute, and then the speedlimit the rest of the way to avoid trouble with the police.
50 miles in thirty minutes, ergo 100 miles in 60 minutes, therefore 100mph!
Mr John, I enjoy your tutorial style. I feel these problems you propose can be very simple and boring for those with more advanced mathematical skills. This set of problems is not designed for them. These people, when they come here, need to move on and stop bragging about their math skills or quit leaving negative responses.
0mph as it got pulled over by the cops for doing 100mph (5miles in 3mins = 10 miles in 6 mins; 10 x 6mins = 1hr, 10 x10 miles = 100 miles; therefore 100mph)
Boy, the world is in trouble if it takes 15 minutes to figure this out. In ten seconds I came up with 160 kilometres an hour without a pencil.
you make it boring sir
Hey if your going to school in the inter cities you don’t have to do math anymore because it’s racist. Good luck balancing your Checkbook. Lol. Oh ya , they don’t even have those anymore
There is an easier way to do this though. 5miles/3 min 60 min/1hr = 300/3= 100m/h ( using a conversion of 60min equals 1hr known as dimensional analysis also known as the factor label method of unit conversion. This way it seems like a lot of steps, but I suppose you need to understand it this way first to get the nuts and bolts of it?
Muchas grasias maestro por tomarse el tiempo de enseñarnos a los que no entendemos desde cero, Bendiciones.
Well, I just saw your video about calculus, so ..., let's use it to find out the answer without resorting to the known formula of d = v × t.
Thus, considering the velocity/speed as the Y ax and the time on the X ax, the distance will be the area under the velocity between t and t+5min.
The formula for the velocity graph will be v(t)=80.
The resulting area is a rectangle with length=5 (minutes) and heigth=80 (mph)=1.33333 (mp min). The area of this rectangle is l x h = 5 x 1.3333 = 6.6666 (miles).
May God have mercy on my soul!
:D
No wonder so many children struggle in school if this is an example of the teaching methods they endure.
You'd mark me down but I know 60 mph is 1 mile per minute. So 3min/60min is .05 hours. So the distance traveled is 5 miles in .05 hour. Therefore, 5 miles/.05 hours = 100mph
“We’ll get to that in a second”. 4 minutes later starts on the problem. My question is, do we need to adjust the answer based on the observation that 1 second equals four minutes???
too much explanation makes it complicated
I asked my 6 years old and he said dah it's going 5 miles in 3 minutes and he was right .
5÷3=1.6666×60=100
5 miles ÷ 3 minutes = 1.6666 miles/minute × 60 mins (1 hr) = 100 mph.
Simple problem; 5 miles/3 minutes = 5/3 miles/minute or 1 2/3 miles per minute. No unit conversion specified or needed.
If the Tesla went 5 miles in three minutes I'd say it was traveling at zero mph while it waited for the fire engines to arrive and put out the flames.
laughing.
Can you make this any harder? 60 devided by 3 times 5 equals 100
5 miles in 3 min if it starts at 100 mph but what is the power curve if it started from 0 mph? How may mins and how far did it have to travel to get to 100 mph? The equation is missing some key info for a correct answer. I'm going to guess it was already at speed.
If it isn’t on a closed course, it better be doing the speed limit. If it is doing something crazy like 100 mph on regular highways something bad might happen.
100 mph
[5miles/3min = X/60Miles], Then Solve for X. [5 Time 60 = 300; 3 Times X = 3X]; [3X/3 = 300/3]; Answer: X = 100 MPH. Very Simple Method.
The easy way to find the answer is to divide 60÷3=20, next multiple 20x5=100. miles per hour..
But why is your board green?
Why do you make all your problems so complicated? in my head 60 / 3 = 20 x 5 =100mph
It is discouraging that a question such as this can be answer in a matter of seconds.
I think you need to change your teaching method if every comment is "Why did you make it so complicated?".
5/3X60= 100mph why all the hoops.. wow
5mi per 3min = D mi per 60 mins (per hour)
So 5/3 = D/60, 300/3 = 100mph
Quick way is just (60 mins/hr)/3 min x 5miles = 100 mph
Another:
3 mins = 5% of an hour, so 5 miles is 5% of how many?
5miles/.05 = 100 miles
5 Divided by 3 = 1.666 miles per min X 60 min (1 hr) = 100 Mph
solved this in my head in less than 5 seconds
WoW, This retired commercial pilot says 5 miles in 3 minutes, = 1.6 miles per minute times 60 =100MPH, wow, guy must love to hear himself talk, wow.
Five miles a minute is 300mph divided by 3 is 100mph, right?
The front end is going 8,800 Feet per Minute. The back end is going slower than the front. If both ends were going the same speed it would be going sideways.
Amazing how everyone has different ways to solve it.
1 hour =60 mins 3 min/60 min = 0.05 hrs, 5 miles equals 3 mins or 0.05 hrs,
5 miles/0.05 equals 100, distance equals speed x time or 100x0.05 hrs = 5 miles 😉
3 minutes over 60 mins = 5 over X So. 3/60=5/X or, 3 = 300/X or, 3X = 300, or X=100 miles per hour
There are at least a couple of assumptions that he is making in order to use his simple equation to solve the problem. The problem is, none of these assumptions are true and none are stated as givens. We cannot assume the car is going at a constant speed or that it is always going in the same direction, neither assumption is even typical for a car (whether it be a Tesla or any other car). Without these two big, and not necessarily true, assumptions being taken we simply do not have enough data to solve this problem.
I have a 1974 VW. Probably would take a good 1/2 hour.
5 divided by 3 =1.6666 miles per second . 1.6666 x 60 seconds =100 mph
5 divided by 3 = 1.6666667 rounded, x 60 seconds per mile = 100.
You make it complicated. 5/3 =x/60, then 300 = 3x, & x = 100 mph
Miles per Hour
3 x 20 = 60 mins (1 hour)
5 x 20 = 100 (mph)
Wow, u almost confused me, why didn’t u just explain it using dimensional analysis. It’s much easier much less steps and everything cancels nice and neatly.
3 min-5miles. 60 min-5x60/3=100 mph speed of TESLA Ans
Geez, a 16 minute video?? 20 times 3 minutes is an hour, and 20 times 5 miles is 100 miles. It's going 100 miles an hour.
I got 100 mph but I used decimals: 3 min. = .05 hours. 5/.05=100.
6,542 miles per hour, but that is just a quick back of the napkin estimate. Let me go and hone that a bit more.
I did it in my head in about 30 seconds... what times 3 = 60... 20... 20 times 5 =100!
Very Nice
5/3=1.66(minutes per hour) x 60 (minutes)=100mph
Just break it down by minutes. Why segments?
5÷3=x÷60 then 3x=5 times 60 then 3x = 300 then x=300÷3 = 100
Or: 5÷3 = 1.666
1.666 = x÷60
X =1.666 times 60 which = 100
Even kids know 3 mts is1/20 of an hour so just multiply 5 by 20=100. You take 15 mts to explain a problem it takes less than 5 secs to solve,
Just change miles/min to miles/hour.....5Miles/3Min X 60Min/Hr, Min Units cancel = 100 Miles/Hr
5 miles / 3 min x 20 / 20 = 100 miles / 60 min = 100 mph
I just divided 5 by 3 times 60(minutes) = 100 mph
5 miles/3 minutes X 60 minutes/hour.. Minutes canceled 5*60 miles/ 3 hours = 100 miles / hour
It's parked up now, no speed.
3 minutes times 20 = 60 minutes or 1 hour
5 mph times 20 = 100
What's so difficult about that?
everybody knows 60mph = 1 mile a minute, so a 2/3 increase = 100mph. Simple
100mi/hr : 5 X 60 divide by 3
100mph... can tell just by looking at it. 60/3 × 5. Simple dimensional analysis.... soooooo easy!
he really spun out his answer....
3X/60=5
3X=5*60
X=(5*60)/3
X=100
Why does that Tesla look more like a Mazda? Seems a circuitous route to an obvious answer though - 5 miles in 3 minutes = 50 miles in 30 minutes = 100 miles in 60 minutes - therefore 100 mph
1.6m/ minute or 96m/ h that is the speed.
It depends on whether or not it had the flux capacitor installed properly to go faster than 88 mph....oh wait! that's a Delorean not a Tesla.🙂
It is going 5 miles per 3 minutes. The question didn’t specify what units to use.
Or 1.67 miles per minutes.
Or 2400 miles per day
Or 886,000 miles per year (non-leap year).
D equals rt. Just make units agree
Brandon likes to complicate a simple problem ! If the Tesla's owner's girlfriend had run her vibrator for one hour the tesla might not be able to go 100mph so it would have taken longer to go 5 miles ! maybe he needed to pickup his Xwife at the truck stop !
I saw 3 minutes times 20 equals 60 minutes, so I just multiplied the 5 times 20 and got 100. Just logical mental math.
Needs to slow down. 100 mph LOL
5:3=X:60 X=100
Do we really need a video for this?
At 70 mph = one mile, so give or take your traveling about 100 mph.
can do that in my head
Could you at least pick a vehicle that the majority can relate to?!
Easy, 5÷3= 1 and 2/3rds so 60mph x 1 and 2/3rds = 100 mph.
The next question is: how far did the Telsa travel during this video assuming the driver did not fall asleep?
:-]
can't you just say, "The problem is what is the speed of the Tesla. Speed is equal to the distance travelled divided by the time it took to travel that distance as seen by its unit, mph. We have the distance (5 mi) and we have the time (3 min). But we need to convert minutes to hours so we'll have a speed expressed in miles per hour. There are 60 minutes to an hour so to convert 3minutes to hour , you divide it by 60, 3/60. Now we can use it to the formula speed = distance/time = 5/(3/60) = 100 mph. SIMPLE! And it will just take you 2 to 3 minutes!
Your style of explanation is everybody gets frustrated by the 3 minute mark and is wondering when you're gonna get on with the problem.
100mph by inspection.
20 * 5at 3= 100mph
5/3=1.66x60=100