Author Question: 1 If the person shown here on the ground is in an inertial reference system, his friends in the van ... (Read 70 times)

Jipu 123 · **on:** Jul 28, 2018

1 If the person shown here on the ground is in an inertial reference system, his friends in the van moving by at constant velocity are also in an inertial reference system. True False
Indicate whether the statement is true or false

Question 2

Which of these statements is true about the rotation of Earth?
a. Earth does not precess.
b. Precession only applies in conditions of gravity, so Earth cannot precess.
c. Earth is a slightly irregular sphere and precesses very slowly.
d. Earth is a very irregular imitation of a sphere, and precesses very fast.
e. Earth's North Pole has always pointed toward the star Polaris.