Sheetal first went ot her friend Sangeets's house on her way to school. Prashant went straight from home to school. Both are walking with the same speed. In the above examples, is there a difference between the actual distance and the distance travelled? What is it?

Sheetal first went ot her friend Sangeets's house on her way to school. Prashant went straight from home to school. Both are walking with the same speed. Who will take less time to reach the school and why?

Suppose you are listening to an out-door live concert sitting at a distance of 150m from the speakers. Your friend is listening to the live broadcast of the concert in another country and the radio signal has to travel 3000 km. to reach him. Who will hear the music first and what will be the time difference between the two? Velocity of light = 3 xx 10^8m//s and that of sound is 330m//s .