Question

a radar sends a signal to a plane which is 4.5x 100 m away with the speed of light. After what time will the signal be received?

Answer 1

Answer:

150/10⁸s

Explanation:

t = d/v

(v is velocity)

d = 4.5 × 100

v = 3× 10⁸

t = 450/3 × 10⁸

= 150/10⁸s

Answer 2

Answer:

3*10^-6 seconds

Explanation:

v=2d/t

3*10^8 =2*4.5*10*10/t

t=900/3*10^6

=3*10^6

=3*10^-6 seconds