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

Im having trouble with this problemPlease help

  • Thread starter Robby11
  • Start date
  • #1
2
0
A ball is dropped from rest a height h above the ground. Another ball is thrown vertically upward from the ground at the instant the first ball is released. Determine the speed of the second ball if the two balls are to meet at a height h/2 above the ground.

Ive been working so long on homework today maybe thats the reason I cant figure this one out...can someone please help me Thankyou
 

Answers and Replies

  • #2
1,860
0
What have you done so far?
 
  • #3
2
0
For the ball released from height h, h/2 = 1/2gt^2, where t is the time taken to fall a distance of h/2. Therefore t = (h/g)^1/2.........i have no clue where to go next or if this is even correct
 
Last edited:
  • #4
1,860
0
You can almost intuitively even figure this one out. You seem to be off to a good start though. Also, remember that you know that the time is the same for both since they meet at the same time.
 

Related Threads for: Im having trouble with this problemPlease help

Replies
9
Views
2K
Replies
3
Views
18K
Replies
8
Views
2K
Replies
4
Views
2K
Replies
1
Views
1K
Replies
2
Views
1K
  • Last Post
Replies
2
Views
3K
Top