Question

EASY 15 POINTS

In July 2013, the spacecraft Messenger was near Mercury at a distance of 9.75 × 10^7 km from Earth.
Taking the speed of light to be 3 × 10^8 m/s,

(a) work out how long it takes light to travel a distance of 9.75 × 10^7 km.
PLZ ANSWER AS QUICKLY AS POSSIBLE. ​

Answer 1

325 seconds

Explanation:

9.75 x 10^7km = 9.75 x 10^10m

Since time= distance/speed

9.75 x 10^7m/ 3x10^8m/s

=325seconds