physics
posted by Anonymous .
An engine provides a 10kw of power to lift a heavy load at a constant velocity a distance 20m in 5s. what is the mass of the object being lifted?

10kw=m*9.8*20m/5s
solve for mass 
150kg?

no, redo your calculator.

when i worked it out one way i got 250kg and when i worked it out the second way i got 200kg

so what is the right answer?