- #1
hyde2042
- 26
- 0
Homework Statement
A ball is thrown downward from a height of 30m at 8m/s. How long until it hits the ground?
(Air resistance is negligible and gravity is 9.8m/s
Homework Equations
I tried deltaX=Vi+(1/2)a(t^2) and came out with 2.12, but the solution says it's 1.79.
The Attempt at a Solution
30=8+(1/2)(9.8)(t^2)
22=4.9(t^2)
sqrt4.49=sqrt(t^2)
t=2.12