10  COM Z$[1]
20  REM PROGRAM NAME = CENTRQ, FORCE AND ACCELERATION ARE COLINEAR
30  REM CHAINED TO CENTRI, CENTR2, CENTR3
40  GOTO 60
50  CHAIN "$CENTR3"
60  DIM A$[19],B$[10]
70  PRINT 
80  PRINT "----- SECTION 3 - QUIZ:"
90  PRINT '10"1. FOR THESE EXPERIMENTS IS THE DIRECTION OF THE RESULTING VELOCITY"
100  PRINT "   THE SAME AS THE DIRECTION OF THE APPLIED FORCE?  ";
110  ENTER 200,W,A$
120  A=1
130  PRINT 
140  GOTO 210
150  PRINT 
160  PRINT '10"2. FOR THESE EXPERIMENTS IS THE DIRECTION OF THE RESULTING"
170  PRINT "   ACCELERATION THE SAME AS THE DIRECTION OF THE APPLIED FORCE?  ";
180  ENTER 200,W,A$
190  A=2
200  GOTO 350
210  IF A$="YES" THEN 270
220  IF A$="NO" THEN 250
230  GOTO 90
240  GOTO 150
250  PRINT "     RIGHT!"
260  GOTO A OF 150,390
270  PRINT "     PLEASE EXAMINE THE RESULTS OF APPLYING A FORCE DIRECTED SOUTH"
280  PRINT "     TO A MASS MOVING TO THE EAST.  IF YOU STILL CANNOT SEE THAT"
290  IF A=1 THEN 320
300  PRINT "     THE RESULTING ACCELERATION IS ALWAYS IN THE SAME DIRECTION"
310  GOTO 330
320  PRINT "     THE RESULTING VELOCITY IS NOT ALWAYS IN THE SAME DIRECTION"
330  PRINT "     AS THE APPLIED FORCE, PLEASE SEE YOUR TEACHER ABOUT IT."
340  GOTO A OF 150,390
350  PRINT 
360  IF A$="NO" THEN 270
370  IF A$="YES" THEN 250
380  GOTO 160
390  PRINT 
400  PRINT '10"----- SECTION 4 - A CONCLUSION:"
410  PRINT 
420  PRINT "FROM THESE EXPERIMENTS IT SEEMS THAT THERE IS"
430  C1=C2=C3=3
440  PRINT "AN ACCELERATION ";
450  ENTER C2,C1,C3
460  PRINT "IN THE DIRECTION OF THE APPLIED FORCE.";
470  ENTER C2,C1,C3
480  PRINT '10
490  GOTO 50
500  END 
