The heavyweight boxing champion of the world punches a sheet of paper in midair, bringing it from rest up to a speed of 24.0m/s in 0.054s. the mass of the paper is 0.003 kg. find the force of the punch on the paper.

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.