How can you lower the ph of the vinegar?

boil the vinegar to concentrate it.
mix the vinegar with sugar to thicken it.
add water to the vinegar to dilute it.
freeze the vinegar to change its state.

it's all four options.

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 : )