projectile motion explained

This video covers the basics of projectile motion
- what it is
- how it developed
- provide three worked examples on how to solve them
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[@aylora7033]

God bless you sir. Thank you for that quick historical background ,very comprehensive.

[@nilanadesilva1012]

Great video, I understand a lot

[@brendonpetersen4489]

literally more helpful than my physics prof in university. Thanks man

[@PhysicsHigh]

Glad it helped

[@daiwikdhar6464]

Thank you soooo much for this video, it explains everything very clearly...I have literally been looking on youtube and google for hours and then I finally found this!! Thank you and please keep uploading new videos!!! :D

[@PhysicsHigh]

Thanks for the feedback. You’re welcome.

[@daiwikdhar6464]

@@PhysicsHigh :D

[@xxsamperrinxx3993]

Brilliance mate

[@markchristopherlanzuela8521]

Best explanation I ever had !

[@supertron6039]

Thank you sir, it really helped clear some concepts.

[@PhysicsHigh]

Thankyou for the feedback.

[@aldabbas5501]

I got a questions, say for the first example you have done with the cannon, what if you were given an angle and with that you can find the vertical component (also horizontal) of the initial velocity, but of course you didnt put one and assumed it was zero, do you only assume it is zero if you are not given an angle?

[@theunknownonetuo2033]

Liking and subscribing wouldn't be enough to thank you for this awesome video! It helped me so much!

[@PhysicsHigh]

Glad to hear it. Thanks

[@0000Moreau]

only video that helped!!! ✌️

[@maxlambie7788]

ok this is epic

[@petergoh5628]

Hi, for the first example, will it be correct if I find the average velocity from where the cannon is dropping straight down, 50/3.19 Then I use it to find the average velocity when the cannon is falling down in projectile motion by using pythagoras, 440 squared plus 15.67 squared( got it from 50/3.19) then I squared root to get the average speed it projectile motion. Then I use the average speed multiples by 3.19s since it’s the same, to get my answer?

[@ramezyounes6214]

Life saver ♡

[@ruzainahmed7429]

13:36, i dont understand why u put the v as 440 in horizontal motion.please explain me

[@precisionwresonance]

it appears that Galileo's parabola experiment would impart a vertical top-spin upon the object as it descended, thus increasing its downward angle and perhaps affecting fluid resistance?

[@PhysicsHigh]

That’s a very good point. But considering he used metal balls and the lack precision instruments like that of today, I doubt it mattered 🤓. Besides all experiments have a level of uncertainty anyway.

[@ruzainahmed7429]

please clear me this doubt.in the first problem,gravitational acceleration for vertical motion is positive 9.8ms,but why did you put - 9.8ms

[@PhysicsHigh]

good question - I did a blog post on this - www.physicshigh.com/blog/g-negative

[@7w6exjc]

what would be the difference between kinematic range vs maximum range then? im confused

[@PhysicsHigh]

not sure the question you are asking ? Kinematic is simply the study of motion. Range is simply how far someting travels in certain conditions.

[@p6madeeasy701]

nice 👍👍👍 asking permission to use the pictures for my learning material 😍. thanks (screenshots i mean)

[@PhysicsHigh]

No problem 😊 - but please give credit

[@stormtech.8768]

Sir, how did you get 312 m/s for your velocity final for your vertical velocity.

[@seunesther]

I'm trying to figure this out too

[@eternalkraken]

1st comment, Hi paul good video

[@tahakamran7280]

thanks thou

[@samk6042]

Awesome! We need more channels lik u. Do u do chemistry as well?

[@PhysicsHigh]

Thanks Chemistry and Bio would be good too but so little time as I am a full time teacher as well.

[@cohenlloyd964]

what do you use to draw on these images?

[@PhysicsHigh]

I use software called Inspire

[@vijaykale1406]

Your voice is like Tony stark

[@PhysicsHigh]

Haha. No avenger though.

[@stormtech.8768]

Never mind sir I got it

[@hahahahahaha8747]

Not clear at all

[@littlemiss9706]

Isn't acceleration supposed to be 9.8 if it's going towards the direction of gravity (downwards)? And -9.8 if it's going the opposite direction of gravity (upwards)? You said that acceleration is -9.8 because the ball is going downwards(towards the gravity)???? And also how can a height be negative 🤔 Pls someone reply asap😭

[@PhysicsHigh]

The negative indicates direction. Traditionally we make down negative, hence g is -9.8. Therefore any displacement going down is also negative. Be consistent.

[@aliceira456]

It doesn’t really matter which sign you give it honestly, as long as that is communicated in your answer. Conventionally, negative is down hence the -9.8 value. But in saying that, you wouldn’t lose marks for having it the other way around if you identified down as the positive direction and up as the negative direction. Most students however, understand it better with down being negative,

[@ruzainahmed7429]

the same proble i had.but he wrote both the distance and the gravitational acceleration in negative,so it doesnt matter whether you use negative or positive,but remember both should be of the same sign.i mean if the distance is negative g also should be negative

[@PhysicsHigh]

All these things are true but there is a fundamental reason why acceleration for g is negative. Here is my response. www.physicshigh.com/blog/g-negative.