Calculate the average power required to lift a 490 Newton object of vertical distance of 2 m in 10 seconds

Power = (work done) / (time to do the work)

Work = (force) x (distance)

If you want to lift a 490N object, you'll need (at least) 490N of force.

So, when you lift it 2 meters vertically, the work you do is

Work = (490 N) x (2 m) = 980 joules

and

Power = (980 joules) / (10 sec) = 98 watts.