Explain how you would be able to determine if a substance was an acid or a base?

it's filtration, but this is an assumption so my apologies if i got this

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 : )

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter