T/s Vx/ms 0 0
40 6
80 12
120 20
160 28
200 36
240 40
280 40
320 40
360 40
400 38
440 30
480 20
520 10
560 4
600 0

(b) Using your graph of Vx against t to help you, sketch (not on graph paper) a graph of the distance travelled by the train against time for the whole journey You do not need to calculate any actual distances for this sketch but you should concentrate on getting the general shape correct and each axis should have an indication of the scale

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)