Test driver at incredible motors is testing a new model car with a speedometer calibrated to read m/s rather than mile/h. the following series of speedometer readings was obtained during test run
along the long straight road
T[s] 0 2 4 6 8 10 12 14 16
V[m/s] 0 0 2 6 10 16 19 22 22
[a] Compute the average acceleration during each 2 second time interval. Is acceleration constant
? Is it constant during any part of the test run?
[b] make acceleration time graph for the data above. From the graph find instantaneous
acceleration at t=9s, t=13s and t=15s

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)

What describes the formation of horizon b? a. forms at the surface b. features parent material c. undergoes the most change d. forms due to decomposed material i think the answer is c. undergoes the most change

Wo small variable-thrust jets are actuated to keep the spacecraft angular velocity about the z-axis constant at ? 0 = 1.16 rad/s as the two telescoping booms are extended from r1 = 1.18 m to r2 = 4.69 m at a constant rate over a period of 124 seconds. the small 19-kg experiment modules at the ends of the booms may be treated as particles, and the mass of the rigid booms is negligible. determine the necessary thrust t for each jet as a function of time where t = 0 is the time when the telescoping action is begun. after you have the general expression for t, answer the questions. show work.