Originally Posted by County Mike
I was looking at it as solved correctly depending on point of view for upward being positive or negative. However, after re-reading the problem, it uses a 4m/s as the initial velocity of the bear so considering up to be negative velocity could be considered incorrect. I'll give you that one but if I was the teacher, I'd give either one credit for knowing how to do it.
yes, i think you are correct that a case could be made for both, i think the teacher could give points either way as well
i didn't know you knew physics mike, you probably know it better than me