Author Question: While a car travels around a circular track at constant speed, its A) acceleration is zero. B) ... (Read 50 times)

809779 · **on:** Jul 29, 2018

While a car travels around a circular track at constant speed, its

A) acceleration is zero.
B) velocity is zero.
C) both of these
D) none of the above

Question 2

Planet Z-34 has a mass equal to one-third that of Earth and a radius equal to one-third that of Earth. With g representing, as usual, the free-fall acceleration at the surface of Earth, the free-fall acceleration at the surface of Z-34 is

A) g/3.
B) 3g.
C) 6g.
D) g/9.
E) 9g.