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

Motion in One Dimension

  • Thread starter mcryder16
  • Start date
  • #1
10
0

Homework Statement



Heather and Jerry are standing on a bridge 46 m above a river. Heather throws a rock straight down with a speed of 30 m/s. Jerry, at exactly the same instant of time, throws a rock straight up with the same speed. Ignore air resistance. How much time elapses between the first splash and the second splash?

Homework Equations



Need help finding the equation?

The Attempt at a Solution

 

Answers and Replies

  • #2
674
2
Solve for the time it takes both rocks to hit the water under a constant gravitational acceleration. You know initial velocity, displacement, and acceleration. All that you need is time. So find the best kinematic equation for your problem.
 

Related Threads for: Motion in One Dimension

  • Last Post
Replies
1
Views
826
  • Last Post
Replies
1
Views
327
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
4
Views
4K
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
16
Views
5K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
2
Views
2K
Top