The empirical formula/s mass is equal to or greater than that of the molecular formula’s molecular mass.

The empirical formula is the representation of simplest whole number ratios of the elements which comprising the compound while, molecular formula is the actual whole number ratio of elements in the formation of compounds.

Empirical formula is equal to molecular formula.

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )