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CollegeStudent
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Homework Statement
A ball is thrown straight up at 30m/s. Assume g is 10m/s/s Show the dispacement, velocity, and acceleration at each position.
Homework Equations
Vf² = Vi² + 2aΔx
Vf = Vi + at
The Attempt at a Solution
So first I wanted to solve for the time it takes to go up so
Vf = Vi + at
0 = 30 + (-10)t
t = -30/-10 = 3 seconds up
then just times 2 because its the same coming down
so 6 seconds in all
Now for distance up
Vf² = Vi² + 2aΔx
Δx = (Vf² - Vi²)/2a
Δx = (0 - 900)/2(-10)
Δx = (-900)/(-20)
Δx = 45m up
and again times 2
so 90 meters in all
Now for some reason I'm having trouble figuring out how to find the velocity,displacement,and acceleration at each 1 second interval.
Should acceleration stay the same until the top where its 0 then change to +10m/s/s?
And how and what formula would I use for the other two?
Thanks in advance everyone