The distance from Earth to the North Star is about 430 light-years. Which of the following statements describes why scientists u
se the light-year unit to measure distance in space?
A.) A light-year is very small and distance in space are very small
B.) A light-year unit is very small and the distance in space are very large
C.) A light-year unit is very large and distance in space are very small
D.) A light-year unit is very large and distance in space are very large
1 answer:
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C. amphibian eggs do not contain a protective shell
Answer:the acceleration will double
Explanation:
Colour: Colourless
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Freezing point: -218
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<span>
Total distance covered = 40+20+30 = 90 km
Total time taken to cover this distance = .5 hr + .2 hr + .75 hr = 1.75 hr
Avg. speed of Trip would be
90/1.45 = 62.07 km</span>
