Member of the Month

Rock_Inhabitant
June, 2024

Online

Welcome to the Newschoolers forums! You may read the forums as a guest, however you must be a registered member to post. Register to become a member today!

Physics projectile motion problem +k

profile picture
kung_powpow
Posts: 1990 - Karma: 3,669
Only did half a test today so I wrote down the problems but still can't do this shit for my life. Help a homie out! +k

An object is shot off a 15m high cliff going 20 m/s at 45 degrees. Find the final velocity in the Y direction.

Dec 5 2013 9:03PM
19 66
profile picture
AT-AT
Posts: 3281 - Karma: 3,256
initial v = 20 cos 45 = 14.14

final v^2 = initial v^2 + (2)*(a)*(d)
final v^2 = 14.14^2 + (2)*(9.8)*(15)
final v^2 = 494
final v = sqr(494)

final velocity = 22.23 m/s
Dec 13 2013 6:40PM
0 0
profile picture
deleted5
Posts: 14507 - Karma: 13,500
It's ok don't feel bad, he got banned from a physics form.
Dec 13 2013 6:41PM
0 0
profile picture
coling
Posts: 1086 - Karma: -3
This is the solution to equation 2 on the sheet
Dec 13 2013 6:42PM
0 0
profile picture
coling
Posts: 1086 - Karma: -3
Thats the same answer i got. Congradulations, youre the second person to solve the problem in this thread
Dec 13 2013 6:43PM
0 0
profile picture
coling
Posts: 1086 - Karma: -3
That leaves just you left to solve the problem. Go ahead! We are waiting...
Dec 13 2013 6:45PM
0 0
profile picture
AT-AT
Posts: 3281 - Karma: 3,256
^ yea but i don't act like a prick or talk shit when i do it. Just trying to help the kid out, if it was a legitimate question.
Dec 13 2013 6:46PM
0 0
profile picture
coling
Posts: 1086 - Karma: -3
Fair enough
Dec 13 2013 6:47PM
0 0
profile picture
chicken
Posts: 6843 - Karma: 2,122
I did solve it... on the first line I posted you fucking moron.

I didn't want to work out sqrt(5) but its about 2.2 so the answer is 22m/s
Dec 13 2013 8:32PM
0 0
All times are Eastern (-4)