Introduction to Acceleration with Prius Brake Slamming Example Problem

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Күн бұрын

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@kenmagee8690 7 жыл бұрын

Your Videos are Genius. I am in my 40's and have gone back to school to complete my chemistry degree so I can teach high school chemistry and biology. Your videos have helped so much in understanding my physics class. Thank You, Thank You, Thank You. I hope to bring as much excitement to my chemistry classroom as you bring to the world of physics.

@FlippingPhysics 7 жыл бұрын

You are certainly welcome. Glad to help you learn to become a teacher. Good Luck! It's a great profession.

@77katsumoto 9 жыл бұрын

I love the way you put in evidence common student mistakes! Superb work with the series!!

@vishalsuresh837 4 жыл бұрын

This man is going to be the reason I pass physics

@FlippingPhysics 4 жыл бұрын

No. You are. My videos are just a tool you use to learn. You are doing the work.

@nosleepdelirium1214 2 ай бұрын

your videos are wonderful and very helpful thank you! in this case doesn't the (-) sign indicate direction, which would actually be West, which would make sense as the car slows to a stop the acceleration is in the opposite direction to the cars original velocity?

@thatfknweirdkid_7692 2 жыл бұрын

4:15 subtitles are wrong, they say 22.3741 and 22 when on the board it says 23:3741 and 23

@FlippingPhysics 2 жыл бұрын

Actually, no, the subtitles are not wrong. If you do the calculation, you will discover the board is incorrect and the subtitles are correct. Yep, there is a mistake in the video. KZbin won't let me upload a video replacement, however, I can fix the subtitles!!

@roshanbeeram378 4 жыл бұрын

I have a question can acceleration be constant such that it affects only the direction of velocity but not its magnitude

@FlippingPhysics 4 жыл бұрын

This video answers that question: www.flippingphysics.com/centripetal-acceleration.html

@dalambert4090 9 жыл бұрын

8:45 it's redundant to say -5.7 m/s^2 east, since east already contains the direction. the acceleration is 5.7 m/s^2 east. That tells you the magnitude and direction.

@FlippingPhysics 9 жыл бұрын

+da Lambert This is not correct. The acceleration of the Prius is -5.7 m/s^2 East. You could also say the acceleration of the Prius is +5.7 m/s^2 West [because negative West is East]. However, the acceleration of the Prius is _not_ +5.7 m/s^2 East. If you want to more about how velocity and acceleration directions are related, watch this: kzbin.info/www/bejne/g5ibf6Z-pcZ3qLsm48s

@dalambert4090 9 жыл бұрын

+Flipping Physics Oops... I meant acceleration is 5.7 m/s^2 west since the car was moving east and you were slowing down. The point i was trying to make was that with cardinal directions it is possible to remove negative signs and have a (positive) scalar with a direction, with degrees for finer directions between the 4 cardinal directions. But this is an onerous condition, as the negative sign popped up as you solved the problem, and you can define negative east as west. You are correct as you defined the problem in the video. :) In 1 dimensional motion along a line, it is sufficient to define direction using plus or minus, since there are only two directions along a line, right or left (or up/down, etc). In 2 dimensional motion, as in your car example, having a positive/negative sign in front of the acceleration is not sufficient. it would be ambiguous. It is interesting to use cardinal directions for 2d motion, i am accustomed to using vectors (x , y ) . Both of these coordinatizations are useful, depending on the problem.

@dalambert4090 9 жыл бұрын

+Flipping Physics I have a question about 9:24. In physics a magnitude is traditionally a positive value, at least in the context of vectors. A workaround might be to say the magnitude is 5.7 m/s^2 and the direction is negative east.

@FlippingPhysics 9 жыл бұрын

+da Lambert I agree with your nitpickiness (unless you try to argue nitpickiness isn't a word). Magnitude isn't actually negative and I probably shouldn't have said "-5.7 m/sec^2 is the magnitude". +5.7 m/sec^2 is the magnitude and negative East (or West) is the direction. However, at this point in the students' learning, I don't want to confuse them too much. They haven't even learned about vectors yet. I wanted them to mostly understand that the acceleration works out to be negative when an object is slowing down and moving in a positive direction.

@catherineli1991 2 жыл бұрын

You changed it from km/hr to m/s, I understand that you need to change the hr to secs due to the change in time, but is there a specific reason you change km to m?

@TranquilSeaOfMath Жыл бұрын

You need to use SI standardized dimensions. That is the way the formulas are derived to work for. In scientific discourse, standardization assists communication. For an example of a real life error in this, look up the U.S. NASA mars lander crash in 1999.

@julielangenbrunner9212 Жыл бұрын

These equations work regardless of the units. acceleration can come in units of km/h/s (= km/(h*s)), and this equation can be used to find that, no problem. But it is true that SI units for acceleration are m/s/s.

@thegamingwubba 6 жыл бұрын

Wait did I hear fortnite. He predicted the future

@carultch 2 жыл бұрын

Fortnight. It is a British term for two weeks whose full name is "fourteen nights". Furlongs per fortnight is a humorous velocity unit.

@quinnmcdowell479 8 жыл бұрын

Why do they all have the same socks?

@Ipfreely31415 7 жыл бұрын

Quinn McDowell they change every episode if you look closely

@DiscountASMR Жыл бұрын

8:49 perfect👌

@varun2247 3 жыл бұрын

Can you do tough challenging jee advanced previous year problem? Indian curriculum you'll get so many views from india. Video solution

@Aaronbanks1999 4 жыл бұрын

How do you answer the questions ??

@cassieknight6602 2 жыл бұрын

Would it be incorrect to state"x m/s2 West" instead of "- x m/s2 East". (My phone darkened your video so much that I cannot see the figure in the result hence the "x".)

@julielangenbrunner9212 Жыл бұрын

yes!