Added 2.7 and 2.11

chapter2/2.11-ball_table3.py

@@ -0,0 +1,57 @@
+t = [0.1, 0.2, 0.3, 0.4, 0.5, 0.6]
+
+def y(t):
+    # formula 1.1 - find the vertical position of a ball at a specific (t) time
+    v0 = 5 # initial velocity
+    g = 9.81 # gravity 
+
+    return (v0*t)- (0.5*g*(t**2))
+
+# calculate the y for the different t values
+y = [y(T) for T in t]
+
+# save the two lists in one list
+
+t1 = [t, y]
+
+i = 0
+print '---------------------'
+print '|__t______|y(t)_____|'
+
+# loop through our two lists and print the values
+while i < len(t1[0]):
+    tvalues = t1[0] # our t values
+    yvalues = t1[1] # our y values        
+    print '|  %g   |%4.4f    |' % (tvalues[i], yvalues[i])
+    i = i + 1
+print '---------------------'
+
+# by using list comprehension we can mix the two values into new elements in our new list
+t2 = [[T, Y] for T, Y in zip(t, y)]
+print '---------]2[---------'
+# we print the elements, we know that t is index 0 and y(t) is index 1 in each of our list elements
+for T2 in t2:
+    print '|  %g   |%4.4f    |' % (T2[0], T2[1])
+print '---------------------'
+
+
+'''
+Unix> python ball_table3.py 
+---------------------
+|__t______|y(t)_____|
+|  0.1   |0.4509    |
+|  0.2   |0.8038    |
+|  0.3   |1.0585    |
+|  0.4   |1.2152    |
+|  0.5   |1.2737    |
+|  0.6   |1.2342    |
+---------------------
+---------]2[---------
+|  0.1   |0.4509    |
+|  0.2   |0.8038    |
+|  0.3   |1.0585    |
+|  0.4   |1.2152    |
+|  0.5   |1.2737    |
+|  0.6   |1.2342    |
+---------------------
+'''

chapter2/2.7-ball_table2.py

@@ -1,5 +1,35 @@
-"""
-Compute from formula (1.1)
-with a list of t (0.1 - 0.6)
-"""
 t = [0.1, 0.2, 0.3, 0.4, 0.5, 0.6]
+
+def y(t):
+    # formula 1.1 - find the vertical position of a ball at a specific (t) time
+    v0 = 5 # initial velocity
+    g = 9.81 # gravity 
+
+    return (v0*t)- (0.5*g*(t**2))
+
+# calculate the y for the different t values
+y = [y(T) for T in t]
+
+i = 0
+print '---------------------'
+print '|__t______|y(t)_____|'
+
+# loop through our two lists and print the values
+while i < len(y):
+    print '|  %g   |%4.4f    |' % (t[i], y[i])
+    i = i+1
+print '---------------------'
+
+
+'''
+martirod@lazarus ~/privat $ python ball_table2.py 
+---------------------
+|__t______|y(t)_____|
+|  0.1   |0.4509    |
+|  0.2   |0.8038    |
+|  0.3   |1.0585    |
+|  0.4   |1.2152    |
+|  0.5   |1.2737    |
+|  0.6   |1.2342    |
+---------------------
+'''