You take a spectrum of a star and detect a balmer absorption series, but all of the wavelengths are shifted toward the blue, by 1%. the star is traveling:
a. toward you at v = 0.1c
b. toward you at v = 0.01c
c. neither toward nor away from you
d. away from you at v = 0.01c
e. away from you at v = 0.1c

As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is 100) a) static friction. b) kinetic friction. c) a combination of static and kinetic friction. d) neither static nor kinetic friction, but some other type of friction. e) it is impossible to tell what type of friction acts in this situation.

Newtons view of arrangement of the universe

M1 = 2.8 kg, m2 = 6.72 kg, m3 = 11.2 kg, byas in .is ,is .toof m3 it 0.91 m. (in m/s)