A train travels at a constant speed of 60.4 mi/h for 101.5 min. What distance does the train cover expressed to the correct number of significant figures?
A) 100 mi
B) 102 mi
C) 102.2 mi
D) 102.18 mi
E) 102.181 mi
Question 2
Two fixed navigation beacons mark the approach lane to a star. The beacons are in line with the star and are 49 Mm apart. A spaceship approaches the star with a relative velocity of 0.50 c and passes the beacons.
The passage of the ship between the beacons is timed by an observer on the ship. The time interval of the passage is closest to: A) 280 ms
B) 330 ms
C) 380 ms
D) 170 ms
E) 110 ms
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