What feature of Einstein's theory of relativity is demonstrated by the phenomenon of matter-antimatter annihilation?
A) the relativity of mass
B) the constancy of lightspeed
C) E = mc2
D) the relativity of time
E) that too much television will give you gas pains and make you froth at the mouth
Question 2
A certain car traveling at 34.0 mph skids to a stop in 29 meters from the point where the brakes were applied. In approximately what distance would the car have stopped had it been going 105.4 mph?
A) 29 m B) 90 m C) 51 m D) 158 m E) 279 m