Astronomers determine that a certain square region in interstellar space has an area of approximately 2.4 \times 10^72.4×10 7 (light-years)2, where a light-year is a unit of astronomical distance. assuming that this region is a square, then a single side of the square would be approximately how many light-years long?

1.5 × 10³⁶ light-years

Explanation:

A certain square region in interstellar space has an area of approximately 2.4 × 10⁷² (light-years)². The area of a square can be calculated using the following expression.

A = l²

where,

A is the area of the square

l is the side of the square

l = √A = √2.4 × 10⁷² (light-years)² = 1.5 × 10³⁶ light-years

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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