Question: Besides its weight, a 2.70 kg object is subjected to one other constant force. The object starts from rest and in 1.20 s experiences a displacement of (4.20 - 3.30) m, where the direction of is the upward vertical direction. Determine the other force.

Where do I begin??

I'm not clear on the situation, is the object in free fall, or is it on a table?

The question seems a bit odd.

It doesn't say. The question is worded exactly the way I tyepd it?