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Text File  |  1993-11-07  |  2KB  |  17 lines

  1. "AST1CAL3 EQUATION VARIABLE","11-07-1993","12:03:41"
  2. "ACCELER=(V-VELINIT)/(T+1E-30)*(1-SIGN(ABS(A)))+SIGN(ABS(A))*A VELOCAVE=((ABS(V+VELINIT)/2)*(1-SIGN(ABS(ACCELER)))+SIGN(ABS(ACCELER))*ABS(ACCELER*T-VELINIT)/2)*SIGN(ABS(T))+(V+VELINIT)/2*(1-SIGN(ABS(T))) DISTANCE=(VELINIT*T+0.5*ACCELER*T^2)*(1-SIGN(ABS(S)))+SIGN(ABS(S))*S TIME=((DISTANCE/VELOCAVE)+(1-SIGN(ABS(DISTANCE)))*(V-VELINIT)/(ACCELER+1E-30))*(1-SIGN(ABS(T)))+SIGN(ABS(T))*T"
  3. "VELOCITY and ACCELERATION versus TIME in a STRAIGHT LINE.      An object has an initial velocity VELINIT and is accelerated at a constant      rate ACCELER to average velocity VELOAVE and travels DISTANCE in TIME.          -------------     ACCELER                                                       │  OBJECT   │     ---->       straight line                                     │           │     VELOCITY    ----------->                                      -------------     ---->                                                               | .......>.....>.......>.....|                                                  0                           TIME                                                                                                                          Use these equations when acceleration, velocity and time are important factors. A=accleration, V=final velocity at time T, S=distance traveled at time T.  Enter at least two variables with nonzero values. For constant velocity, V=VELINIT.                                                 (c) Copyright PCSCC, Inc., 1993  *** Answer to problem ***                                                       Assume an instantaneous arrival of the light. The sound travels at 1095 ft/s.   Type ?, then (esc) 0 (enter) to set all variables to zero. Set T to 5.2. Set    both V and VELINIT to 1095. As a consistency check, ACCELER=0 and VELOCAVE=1095 and DISTANCE=5694 ft.     Type any key to exit.                                                ||While at an army base, a person observes the flash of an M1-A1 tank's main gun and hears the sound 5.2 s later.  (a) If sound has a velocity of1095 ft/s in that region, how far away is the tank?                             Type comma key to see answer.  Type (F2) to return to helpfile."
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