- #1
05holtel
- 52
- 0
Homework Statement
A rubber ball is shot straight up from the ground with speed Vo. Simultaneously, a second rubber ball at height h directly above the first ball is dropped from rest.
1) At what height above the ground do the balls collide? Your answer will be a symbolic expression in terms of Vo, h, and g.
2) What is the maximum value of h for which a collision occurs before the first ball falls back to the ground?
3) For what value of h does the collision occur at the instant when the first ball is at its highest point?
Homework Equations
Vf^2 = Vi^2 + 2a(h)
The Attempt at a Solution
I am not sure how to make make the symbolic expression
Ball 1:
Vf^2 = Vi^2 + 2a(h)
h= (Vf^2 - Vo^2) / 2a
h= (Vf^2 - Vo^2) / 2(-9.8m/s)
Ball 2:
Vf^2 = Vi^2 + 2a(h)
h= (Vf^2 - Vo^2) / 2a
h= (Vf^2 - 0) / 2(9.8m/s)
Then make H=H
(Vf^2 - Vo^2) / 2(-9.8m/s) = (Vf^2 - 0) / 2(9.8m/s)