At its closest approach, the distance between the Mars and the Earth is found to be 60 million km . When the planets are at this closest distance, the time it would take to send a radio - message from

Question

At its closest approach, the distance between the Mars and the Earth is found to be $60 million km$ . When the planets are at this closest distance, the time it would take to send a radio - message from a space probe of the Mars to the Earth is

Options:

Answer:

B

Solution:

$t = \frac{distance}{speed}$

$= \frac{60 \times 1 0^{6} \times 1000 m}{3 \times 1 0^{8} {m s}^{-1}} = 200 s$

TestHub · Accepted Answer

t = distance speed = 6 0 × 1 0 6 × 1 0 0 0 m 3 × 1 0 8 m s -1 = 2 0 0 s

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