Thread: AP Physics C Kinematics Homework?
View Single Post
  (#2 (permalink)) Old
Pelios Offline
on Pursuit of Happiness
I can't get enough
*********
 
Pelios's Avatar
 
Name: Andrea
Gender: Female
Location: México

Posts: 3,411
Points: 25,797, Level: 23
Points: 25,797, Level: 23 Points: 25,797, Level: 23 Points: 25,797, Level: 23
Blog Entries: 48
Join Date: January 17th 2009
Re: AP Physics C Kinematics Homework? - September 2nd 2010, 11:24 PM
Ahhh high school physics
I'll do the first and the second one just use the same steps

Ok so you know
d=v*t
d=20m/s*0.5s= 10m
Let's work now with the velocity since that's all you have
v=at
v=20m/s
a=6.0m/s^2
20m/s= 6.0m/s^2*T
T=20/6= 33.33 seconds
D= 0.5* 6.0 * 3.33^2 = 33.26 meters
And she survived and stopped before the collision.


Edit
My bad for 2 you need more

in a) use D=vt
b) Vf^2= vi^2 + 2ad
c) A= vf - vi /Δt

Everyone is born right-handed. Only the greatest overcome it.
Last edited by Pelios; September 2nd 2010 at 11:49 PM.