Physics 3.5.4c - Projectile Practice Problem 3

Practice Problem on Projectile Motion.

[samtoh]

i have to admit that his drawing is very decent

[skylar]

Holy cow, I calculated it before watching and I got it right xD

[leonnishan]

Thankyou So much Man. Youve been amazing, needed so much help understanding concepts and all your videos have been exactly what i was looking for!!

[thomascardoso-grant]

This guy gets ripped on an awful lot for the direction of the acceleration of gravity.
The way he does it makes perfect sense, if you like finding negative times, be my guest.

Thanks for the videos!

[mbakbka]

I literally come back here everytime i have a Physics Final, and you never fail to impress me. Been here 11th Grade, and Freshman College Year!

[bairohaimamastura]

I got the wrong answer because i used x-x0= 1/2(v0+v)t and i got 4 seconds instead of 2s. I assumed that v is equal to zero 🤧

[regionking]

What if they gave you the height of the cliff, but they ask you to find the distance from the cliff that speedy lands?

[garrettdyess]

I don’t understand how you know to calculate for time first. As a novice attempting these problems, unless the problem asks for time, I would not think to solve for it.

[derekowens]

@reemoo123 Each problem is different, and how you approach it depends on the info that you are given. In this case, with the given info, it made sense to start the other way.

[sgrcne]

you are a godsend. thank you so much for posting these videos!!

[AdityaKumar-dmjz]

Sx=Uxt
U will get t
t = root 2h/g
U will get h

[UPrideITNOL]

Please come teach instead of our current teacher. I'm staying home today because I have a Physics test and he didn't teach anything- so I'm spending my day studying your videos.

[brandonkostus]

Can you do an example of this doing this problem

You are walking around your neighborhood and you see a child on top of a roof of a building kick a soccer ball. The soccer ball is kicked at 49° from the edge of the building with an initial velocity of 19 m/s and lands 57 meters away from the wall. How tall is the building that the child is standing on?

[anuurcc]

@derekowens, shouldn't time at 4:20 be half that time since we are only looking for the peak height? so instead of 2seconds use 1 second. Does anybody else see what I'm saying?

[fhozouri]

May you please make a jetfighter launching a missle to a stationary target video?
Thank you.

[catherinsucalit]

gravity is always in downward direction making it +9.8m/s2 if it is against  gravity its -9.8m/s2 it's semantics. but if you are considering the coordinates in the Cartesian plane x axis from the origin to the right +, from the origin to the left - .

y axis from the origin upward + from the origin downward -

[kowhai]

Watching from New Zealand with my Physics exam in two days. You have no idea how much of a lifesaver you are! Totally get projectile motion now thank-you SO much! The accent helps too - very cool ;)

[farshadabedi]

thank u mcuh, u hav no idea how much u helped me and my friends for our yr 12 physics topic

[king]

you are really good at explaining everything. i was confused before i started watching your videos. you made projectile motion really easy for me. thank you very much. looking forward to watching more of your videos as the semester continues

[patriciaamos]

Thank You very much! I understood the topic by watching your videos. :)