Cracking the SAT Physics Subject Test

14. Two satellites orbit the earth. Their orbits are circular, and each
    satellite travels at a constant speed. If the mass of Satellite #2 is
    twice the mass of Satellite #1, which satellite’s speed is greater?

(A) Satellite #1, by a factor of

(B) Satellite #1, by a factor of 2

(C) Satellite #2, by a factor of

(D) Satellite #2, by a factor of 2

(E) Neither; the satellites’ speeds are the same

Questions 15-17 refer to the collision of two blocks on a frictionless
table. Before the collision, the block of mass m is at rest.