A man drops a pumpkin off of the top of a 100. m tall building. a) How long will it take to drop 50. m ?

b) How long will it take to hit the ground ?

c) How long did it take to fall the final 50. m?

d) Why does it take less time to fall the 2nd 50.- m?

e) What it the velocity of the pumpkin upon impact with the ground?

An ideal otto cycle has a compression ratio of 8. at the beginning of the compression process, air is at 95 kpa and 27°c, and 750 kj/kg of heat is transferred to air during the constant-volume heat-addition process. assuming constant specific heats at room temperature, determine (a) the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. (4390 kpa, 1730 k; 423 kj/kg; 56.4%; 534 kpa)