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The eternal struggle of every student who thought they could take shortcuts in physics! Assuming π = 4 and g = 10 is like trying to bake a cake with salt instead of sugar—technically, you're using white crystals, but the results will be catastrophic.
For the uninitiated, π is actually 3.14159... (and goes on forever), while gravitational acceleration (g) is approximately 9.8 m/s². Those tiny differences might seem insignificant until your bridge collapses or your rocket misses Mars entirely!
The look of disappointment on that teacher's face is the universal expression of "I can't believe I have to explain this again." Meanwhile, the student is experiencing that special moment of realization that perhaps memorizing constants is actually important after all!
