- #1
AnomalyCoder
- 29
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Homework Statement
You drop a ball (0.5kg( from a height of 4m. How long did the ball take to hit the ground?
Homework Equations
Assume that initially the velocity is 0 for the following equations below.
[tex]\Delta[/tex]Position = [tex]\Delta[/tex] Velocity * [tex]\Delta[/tex] Time
Acceleration = [tex]\Delta[/tex] Velocity / [tex]\Delta[/tex] Time
The Attempt at a Solution
Acceleration is -10m/s due to gravity.
[tex]\Delta[/tex]X = [tex]\Delta[/tex] V * [tex]\Delta[/tex] T
4 = [tex]\Delta[/tex] V * [tex]\Delta[/tex] T
4 = V * (V/10)
4 = V2/10
40 = V2
Root(40) = V
Then just plug in and solve for time.
Root(40)/(10m/s) = [tex]\Delta[/tex]T
[tex]\Delta[/tex]T is approximately .63 seconds.
I don't know if this is right.. seems like a short amount of time to be honest.