A spaceship is observed from the Earth to be moving toward a star at a speed of 0.80 c.If the distance from the spaceship to the star is 1.6 ly as measured from earth,how long does an observer on Earth find that it takes for the space ship to reach the star?
A) 2.0 y
B) 2.1 y
C) 1.6 y
D) 1.2 y
E) 0.96 y

Question

Quizplus · Accepted Answer

The time taken for the spaceship to reach the star is calculated using the formula: time = distance/speed. Here, the distance is 1.6 light-years and the speed is 0.80c. Thus, time = 1.6 ly / 0.80c = 2.0 years.

A Spaceship Is Observed from the Earth to Be Moving