Understanding Uniformly Accelerated Motion

[@lost_ambler]

The problem with physics arises when one cannot clearly visualize the concepts in real life and you helped me to understand it irl. Thank u!

[@FlippingPhysics]

Glad to help!

[@thomashvnmusic]

Seriously, best explanation i have found in the whole internet. Thanks for the effort you put into making this video for us. So now i understand that the velocity of a car can vary but it is still measured in seconds while the clock of time ticking that passes by doesn't change. So you have two time units so you can compare the cars speed with the clock of a watch. I just realized that the time we count when acceleration happens is different than the time the clock ticks. The car could move from point A to point B in different time so the meters per second could have been different than the time of the clock that this action happened. So s.s (time multiplied by time) makes seconds squared s².

[@asandatengua2661]

This is by far the best explaination for me on meters per second squared. Thanks man or men... LOL

[@FlippingPhysics]

You are welcome. Glad to help you learn.

[@Benwilliamsbodywork]

This description really made sense to my brain. Thank you! Your videos are clear and fun, and take all the anxiety out it.

[@FlippingPhysics]

+Ben Williams Bodywork, LLC Why are putting anxiety into it in the first place? 😁 Glad I can help mitigate some of the anxiety and thanks for your kind words.

[@seno2169]

Beautifully explained!! I wish I had a phy teacher like you

[@FlippingPhysics]

I recently read a Detroit Metropolitan Area Physics Teachers blog post (www.dmapt.org) about Conceptual Difficulties with Acceleration and I realized it would be good to make a video about the topic. Thank you #DMAPT for the suggestion! #PhysicsED #flipclass

[@nuwank3857]

Your KZbin videos are awesome! Keep up the good work!

[@FlippingPhysics]

Nuwan K Thank you for your kind words!

[@chrisvandervoort2537]

Great video, Mr. Palmer. I feel lucky to have learned from you in real time.

[@FlippingPhysics]

Thanks. I feel lucky to have been able to teach physics to you and all your siblings.

[@user-np5fr4zf6e]

Can I ASK is there a friction between the ball and ground? Because they let the ball slide

[@carultch]

Yes. This is why it rolls, rather than slides. For a standard NBA basketball, modeled as a uniform spherical shell, the friction would be 0.83 N at the acceleration given.

[@joanferreira3896]

Thank you Professor

[@Brainiac51]

I’m uniform acceleration does the direction change or does the object have to travel ina straight path to possess uniform acceleration ?

[@carultch]

It would be impossible to have acceleration remain constant, and also travel in a curved path. With uniform acceleration problems, we assume a straight line path. Or we consider any acceleration perpendicular to the path to enable it to curve is "out of the picture" of the problem being solved. For instance, if you are considering the position/velocity/acceleration along a road that inevitably has curves in it, you may simply be interested in focusing your study to the position in terms of where along the arc length of the road, the vehicle happens to be, what the speed of the vehicle is and which general direction, and the vehicle's tangential acceleration. The fact that there is centripetal acceleration to negotiate curves and to follow the curvature of our planet, do influence the full picture of kinematics for a vehicle on it, but may not be relevant to the problem you are solving.

[@anshuraj2077]

Great explanation

[@FlippingPhysics]

Glad it was helpful!

[@jennakaygroom984]

I'm glad that Billy's voice isn't that whiney in every video xD Thanks for your videos Mr. P! My AP physics teacher assigned them for homework and he won a national science award for teaching so you must be doing something right!

[@FlippingPhysics]

Dang, wish I could win a national science award for my Flipping Physics videos. Wouldn't that be awesome! You are welcome for the videos. I hope AP Physics went well!

[@milindbebarta2226]

Hello, I LOVE YOUR VIDEOS! I have a question. Suppose a body starts moving at an acceleration of 3.5 m/s*2 from rest. After 20 seconds will the final velocity of the body be 3.5 * 20 = 70 m/s. I have another similar interesting question, now suppose the body starts at initial velocity of 7 m/s with a uniform acceleration of 4 m/s*2. After 10 seconds will the body have a velocity of 7 + 4*10 = 47 m/s.

[@FlippingPhysics]

Sorry, however, I don't have time to solve individuals physics problems. I have a video which is very similar to these problems though: www.flippingphysics.com/introductory-uniformly-accelerated-motion-problem.html

[@ardingeek4774]

Four weeks into the IB school and already losing my mind in Physics... thanks pal :)

[@FlippingPhysics]

You are welcome. Standard Level or Higher Level?

[@ardingeek4774]

At this point Standard, and Higher seems way too advanced for me :/ Lucky me I won't decide anything until next year (still in pre IB)

[@eoo37]

Your hair made me concentrate! And Thank you for the world greatest physics video!

[@FlippingPhysics]

That's great. Thanks1

[@dipankardutta9338]

Thank you so much....you are so good

[@FlippingPhysics]

So nice of you

[@Mech.Masters]

What are the sign convention for acceleration when a body is under free fall? Why do we take acceleration as negative?

[@FlippingPhysics]

Conventionally down is negative and up is positive. In free fall acceleration in the y-direction is down and therefore, conventionally, negative.

[@Mech.Masters]

Flipping Physics In some textbooks they have taken positive for both the cases, up and down. Should I take the velocity negative, if a body is falling down?

[@FlippingPhysics]

In my experience students get confused when we assign down as positive in some problems and up as positive in other problems. Therefore, it is my suggestion that you always keep down as negative.

[@Mech.Masters]

So the conclusion is acceleration, velocity and displacement should be taken +ve up and - ve down? Am I right?

[@FlippingPhysics]

Please watch this: kzbin.info/www/bejne/q4W0ZZJ3hMaYZ8km33s

[@kurutze]

I really liked your video, however I stringly suggest that you use a microphone. Your voice is heard as coming from afar and some words are hard to understand.

[@uolxox3930]

Thanks very much for the great explanation. You said 2m/s every second is not the actual acceleration of the ball, I didn't get it. Please explain.

[@FlippingPhysics]

The actual acceleration of the ball is probably something like 0.37 m/s^2. (I don't really know; I did not measure it.) The reason I used 2 m/s^2 instead is because multiples of 2 are much easier to understand than multiples of 0.37.

[@Muslim_Ab]

When the first student started to explain things my brain lost 28.47283 cells but after 2 min i understood what he meant thank you for ur help

[@FlippingPhysics]

Glad to help!

[@Zulfiqar.Ali4849]

Hello Respected Sir... I need a favor from you regarding hair problem.. you have a long beautiful hair.. my hairs are constantly falling.. kindly give me some suggestions.. what should i do... iam very disappointed..

[@frances0799]

omygosh you're the smartest thanks

[@mya2317]

Thank god for your videos!

[@FlippingPhysics]

What a lovely thing to say.

[@sukhdevsingh-hw3mx]

what's the great.... explanation

[@rithikchauhan946]

THANKS a LOT MAN I LIKE YOUR VIDEOS

[@FlippingPhysics]

+Rithik Chauhan YOU aRE WELCOME

[@vaishnavikumari3027]

You are amazing man. Love from INDIA.

[@BossKing1243]

Lol you explained this so well, great job

[@FlippingPhysics]

Glad to help you learn!

[@ananyaarora4377]

Are chota sa choka 10 ki geo ki kitaab ma maatha thoda na mareega ibb

[@pranaypal7829]

I think vector arrow should be at the centre of the ball

[@FlippingPhysics]

Agreed, however, then you would not be able to see the both the acceleration and velocity vectors because they would overlap.

[@Shinbithelearner]

Wow back in High school I can't imagine how sec squared is possible thanks!

[@FlippingPhysics]

kirbyrodriguezsamson Glad to be able to clear it up a bit for you!

[@ZackV2496]

sir is bowling a good example of UAM?

[@FlippingPhysics]

+jackielou varquez Absolutely!

[@ZackV2496]

sir! what is the acceleration in free fall, in UAM: vertical dimension? if example a ball thrown downward , is it a= -9.8 m/s^2?

[@FlippingPhysics]

I suggest you watch my video "Common Free Fall Pitfalls". www.flippingphysics.com/common-free-fall-pitfalls.html

[@deependraverma4382]

The acceleration remains same as -9.8 m/s^2. But I am understanding that you are talking about the force on it that should be F=m(-a) because of gravity. Remember force and acceleration are two different things but correlated. Therefore the velocity should be negative after when it reached maximum height. This is a case of free fall. Hope it helps.

[@thomashvnmusic]

Makes total sense.

[@samuelhbean]

I think this is the first time I've seen you fade into the ether.

[@FlippingPhysics]

Just like Shoeless Joe Jackson...

[@pinkribbon1007]

tysm i did not get it before when my sch teacher teach so fasttt urgh but i hv a qns is unifrom acceleration really possible in real life a few decimal off is fine cause i do not get why is it called uniform acceleration

[@FlippingPhysics]

It is possible to get very close to uniform acceleration in real life. However, nothing with every have uniform acceleration to an infinite number of significant digits.

[@munya_wto]

Yessir

[@abdurremuhamad3972]

Is speed and velocity are the same😢

[@أيمنشفيق-ث4ش]

In physics, speed and velocity are related but distinct concepts: 1. **Speed**: - **Definition**: Speed is a scalar quantity that refers to how fast an object is moving. - **Measurement**: It is measured as the distance traveled per unit of time (e.g., meters per second, m/s). - **Direction**: Speed does not include information about the direction of motion. 2. **Velocity**: - **Definition**: Velocity is a vector quantity that refers to the rate at which an object changes its position. - **Measurement**: Like speed, it is measured in units of distance per time (e.g., meters per second, m/s), but it also includes the direction of motion. - **Direction**: Velocity specifies both the speed and the direction of the object's motion. In summary, speed is the magnitude of motion, while velocity includes both the magnitude and the direction.

[@aviliam2073]

i finally understand the concept however i want to verified, basically if the acceleration is 2 meters per second every second then it means we have to square the time in order to get x(m)? so it means that for every problem of uam if the acceleration is 6 meters per second every second then we find the x(m), by using the square root of 6 ? let me know if i did not explain it well, thanks :}

[@FlippingPhysics]

Trying to jump from acceleration to displacement is not a good idea. The way to look at it is that an acceleration of 2 meters per second per second means the velocity is changing by 2 meters per second every second. You need to use the Uniformly Accelerated Motion equations to determine displacement. www.flippingphysics.com/introduction-to-uniformly-accelerated-motion.html

[@ReboUrgi-xm3su]

Good time

[@jouenpataueg2311]

I don't understand even single word😭😭😭😭😭😭😭😭

[@r020squared6]

Sippin wok