1. The problem statement, all variables and given/known data Hey guys, I'm struggling on the following question: Consider a hot air balloon travelling 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=? 2. Relevant equations v1=x0+v0Δt+0.5aΔt2 3. 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.