• Support PF! Buy your school textbooks, materials and every day products Here!

Problem i have the answer to, but need the formula

  • Thread starter tommy1
  • Start date
  • #1
6
0

Homework Statement


A truck is traveling at 17 m/s to the north. The driver of a car, 450 m to the north and traveling south at 22 m/s, puts on the brakes and slows at 3.5 m/s2. Where do they meet?


Homework Equations


i know it is just the basic kinematic equations. but i don't really know which one or anything


The Attempt at a Solution


i got the answer to be 381 meters. I did this months ago in the beginning of the year so i kind of forget how to do a lot of this. I am reviewing for my final so if you could show me the equations i would really appreciate it.
 

Answers and Replies

  • #2
Tom Mattson
Staff Emeritus
Science Advisor
Gold Member
5,500
7

Homework Equations


i know it is just the basic kinematic equations. but i don't really know which one or anything
Surely the equations are listed in your book and/or notes. You really should try to figure out which one it is. Even if you guess wrong, it's still better than not trying at all. You won't pass the final anyway if you don't put forth the effort.
 
  • #3
6
0
Surely the equations are listed in your book and/or notes. You really should try to figure out which one it is. Even if you guess wrong, it's still better than not trying at all. You won't pass the final anyway if you don't put forth the effort.
i have tried to figure this one out. It is the only one i am stuck on from this chapter. part of my notebook got ruined so i am working with limited resources. do not worry though i am putting effort into passing my exam. I am not lazy.
 
  • #4
Tom Mattson
Staff Emeritus
Science Advisor
Gold Member
5,500
7
i have tried to figure this one out.
Great, then please show us one of your attempts.
 
  • #5
tiny-tim
Science Advisor
Homework Helper
25,832
249
v = u + at

s = ut + (1/2)at^2.

And look after them! :smile:
 

Related Threads for: Problem i have the answer to, but need the formula

Top