Question

Two people stand a distance L apart along an east-west road. They both clap their hands at precisely noon in the ground frame. You are driving eastward down this road at speed 4c/5. You notice that you encounter the western person at the same instant (as measured in your frame) that the eastern person claps. Where are you along the road at the instant (as measured in your frame) that the western person claps?

Answer 1

Location along the road = 9/15 L

Step-by-step explanation:

speed eastward = 4c/5

distance between people standing = L

Location along the road at the instant the western person claps =

= 5/3 L - 16/5 L = 9/ 15 L

attached below is a detailed solution