In 1998 scientists discovered that the expansion of the universe has been accelerating what force is causing this phenomena? 1. dark energy
2.Hubble's law
3.the Doppler effect
4.background radiation

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 : )

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)