Which has a greater density: 15 mL of copper or 57 mL of copper?

oh it is true if thats what you are asking

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 : )