Calculating Height of Stone Dropped from Rising Hot Air Balloon

[chuckset]

Homework Statement

If a stone is dropped over the side of a hot air balloon that is rising at 3 m/s and it strikes the ground 1.5s later, from what height above the ground was the stone dropped

Would V1 be 3 m/s or 0.. I'm really confused.

 

[rock.freak667]

Both the hot air balloon and the stone will have the same initial velocity, so v₁ would be 3 m/s.

 

[satchmo05]

Make sure you know your trajectory equations!