Problem acceleration force vs. gravity

[nijmeijer91]

urgent problem acceleration force vs. gravity

Sorry if this is the wrong forum.

I got a problem in my last physics class I am having some trouble with.

A balloon goes straight up with 15m/sec.

After the balloon went up 2m sb. drops a compass.

But the balloon still goes up and doesn't stop.

So the question is when (time) does the compass hit the bottom.

So you probably need to have a equation with the acceleration force of the rising balloon and the gravity (9.8m/square second).

Hope somebody can help me.

Thank you very much.

 

[LowlyPion]

Welcome to PF.

https://www.physicsforums.com/showpost.php?p=905663&postcount=2

You have upward initial velocity. You have upward height.

You know gravity.

So find a formula that will allow you to get what you need to know ... T time.

 

[Redbelly98]

The way I interpret the question, it is a constant 15 m/s velocity for the balloon.