Answer:
1)SI is coherent system of units
2) SI is rational system of units
Answer:
B. The more optically dense the material, the higher the refractive index.
Explanation:
I think it is B, because acceleration is the speed with force?
since the car moves, the force needed to move is greater than the frictional forces opposing it
a = 3.17m/s²
Because without Si there wouldn't be units of measurements.
So SI is t<span>he international system of units of measurements.</span>