Oh wow, I feel dumb. It was a continuation of another question >.< so sorry. Okay, so the first question was "15 J/s of power were needed to lift a suitcase into the trunk of a car in 2.8 seconds. How much work was done?" for that, I got 5.4 J because 15 J/s divided by 2.8s which is W= p divided...
Okay, I am really curious as to how you solve this question, I can't seem to figure it out. I am sure most of you will think it's a piece of cake, but I'm not a physics person at all :p
If the suitcase was lifted 0.75 meters, how much force was required? (Hint: Use the equation for "work")...