Question

EXAMPLE 1.3
A RADAR signal is beamed towards a
planet and its echo is received 7 minutes
later. If the distance between the planet
and the Earth is 6.3 x 1010 m. Calculate the
speed of the signal?​

Answer 1

x = c x t/2 ⇒ c = 2x/t = 2x 6.3 x 10/7 x 60 = 3 x 108m/s