Author Question: If we find v = A , where is a length and v is a speed, what are the mks units for the A? A) s-1 ... (Read 15 times)

Zulu123 · **on:** Jul 27, 2018

If we find v = A , where is a length and v is a speed, what are the mks units for the A?

A) s-1
B) m2/s
C) m/ s2
D) s
E) kg-m/s

Question 2

For a spherical planet to act like a point mass, so that externally F=GmM/r2, it

A) must have constant density throughout.
B) must have a mass << r c2 / (2G).
C) must have spherical mass symmetry.
D) can not be hollow inside.