- #1
Lycouras
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Homework Statement
Hey guys, I'm struggling on the following question:
Consider a hot air balloon traveling upwards at a constant speed of 10 m/s. A passenger drops a small sandbag over the side of the balloon when the balloon was 40 m above the ground. For how long does the sandbag stay in the air before falling to the ground?
Known:
a=-9.81 m/s2
x0=40 m
x1=0 m
v0=0 m/s
v1=?
t=?
Homework Equations
v1=x0+v0Δt+0.5aΔt2
The Attempt at a Solution
0=40+0.5(-9.8)Δt2
-40=-4.9Δt2
8.16=Δt2
Δt2=±2.86
Since time cannot be negative, it takes 2.86 seconds, is this correct? Thanks in advance.