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Two astronauts have deserted their space ships in a region of space far from the gravitational attraction of any other body. Each has a mass of 100 kg and they are 100 m apart. They are initially at rest relative to one another. How long will it be before the gravitational attraction brings them 1 cm closer together?

a)

2.52 days

b)

1.41 days

c)

0.70 days

d)

0.41 days



Question ID - 54660 | SaraNextGen Top Answer

Two astronauts have deserted their space ships in a region of space far from the gravitational attraction of any other body. Each has a mass of 100 kg and they are 100 m apart. They are initially at rest relative to one another. How long will it be before the gravitational attraction brings them 1 cm closer together?

a)

2.52 days

b)

1.41 days

c)

0.70 days

d)

0.41 days

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

Here,  kg ; m

Acceleration of first astronaut,

Acceleration of second astronaut,

Net acceleration of approach

As   

second

On solving we get  days

127 votes


127