Explain how to identify a starting point on a line? P. S this is for 8th grade science on edge

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

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air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

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the answer is symmetrical : )