Question

A space shuttle travels at the rate of 3,094 miles per hour to reach its orbit at a height of 300 km from Earth. If 1 kilometer equals 0.62 miles, which of these conclusions is correct about the space shuttle?
It reaches its orbit in about 4 minutes.
It reaches its orbit in about 30 minutes.
After 5 minutes, it is 60 kilometers away from its orbit.
After 10 minutes, it is 60 kilometers away from its orb

Answer 1

After 10 min it is 60 kilometers from its destination

Answer 2

Answer:

Option A, It reaches its orbit in about 4 minutes.

Explanation:

The speed with which the space shuttle moves $= 3094$ miles per hour.

The distance to which this space shuttle has to move is $300$ kilometers

Given

$1$ KM $= 0.62$ miles

So $300$KM $= 0.62 * 300 = 186$ miles

Lets explore each option one by one

Option D-

So, the distance covered by space shuttle in 10 minutes is equal to

$3094 * \frac{10}{60} \\= 515 miles$

hence , option D is incorrect

Option C -

the distance covered by space shuttle in 5 minutes is equal to

$3094 * \frac{5}{60} \\= 257$miles

hence , option C is incorrect

Option B-

Time taken by space shuttle to reach orbit at 186 miles distance

$\frac{186}{\frac{3094}{60} } \\= 3.60$

hence , option B is incorrect

Therefore option A is correct