A body starts to slide over horizontal surface with initial velocity of 0.5m/s. due to friction it's velocity decreases at rate of 0.05m/s2.How much time will it take to stop the body

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

Need this now! do pilots live long