Answer:
Traveling with a constant velocity means you're going at the same speed in the same direction continuously. If you have a constant velocity, this means you have zero acceleration. ... If you travel with a constant acceleration, your velocity is always changing, but it's changing by a consistent amount each second.
A. 205 cm
This has 3 significant figures: 2,0 and 5.
B. 0.00004 cm
This has 1 significant figure: 4
C. 20 cm
This has 2 significant figures: 2 and 0.
D. 20. cm
This has 2 significant figures: 2 and 0
Because frame of reference decides are your forces positive or negative. It is important for the direction of motion.
20 is the atomic number for Calcium.
Johannes Kepler- he did it by observing the ‘Tycho Brahe’. His 3rd law was published 10 years later to his first two laws.
