Physics 12 help please

  • Thread starter Shakers
  • Start date
  • #1
1
0

Homework Statement



a car accelerates in a straight line from rest ot a velocity of 80km/h in a time of 6s

Homework Equations



what is the acceleration of the car?
how far did the car travel in this time?

The Attempt at a Solution


Now I am trying to convert 80km/h to m/s, so that equals 22.22m/s. I am doing this as an online course and I cant find a formula? Can someone help me please?
 

Answers and Replies

  • #2
139
0
1km/hour = 1000m/3600secs = 1/3.6m / s. This means, that to get m/s from km/hour, you just need to divide it by 3.6.
Acceleration a = dv / dt, both of which you know.
And as for how far did the car travel, s=(a/2)*t^2, since it's from resting. Those are the formulas you need.
 
  • #3
Redbelly98
Staff Emeritus
Science Advisor
Homework Helper
Insights Author
12,115
151

The Attempt at a Solution


Now I am trying to convert 80km/h to m/s, so that equals 22.22m/s. I am doing this as an online course and I cant find a formula? Can someone help me please?
The course does not provide any reference or study material containing formulas? Sounds like you are wasting your money, if you are paying.
 

Related Threads on Physics 12 help please

  • Last Post
Replies
1
Views
5K
  • Last Post
Replies
2
Views
2K
Replies
8
Views
3K
Replies
2
Views
462
  • Last Post
Replies
7
Views
2K
  • Last Post
Replies
1
Views
577
Replies
2
Views
2K
  • Last Post
Replies
1
Views
6K
  • Last Post
Replies
8
Views
2K
Top