Physics, asked by guptagranth67, 1 month ago

The distance between Kanpur and Prayagraj is 200 km. A train travels the first 100 km at a speed of 50 km/h.

How fast must the train travel the next 100 km , so as to average 80 km/h for the whole journey?​

Answers

Answered by seemaaniltiwari2935
0

Answer:

Sorry I can't understand what you have written

Answered by kiranyadav25366
0

Answer:

Time taken to travel first half distance = 100/ 50 = 2 hrs

Time is taken to travel second half distance = 100/v

Average speed = 200/ (2 + 100/v)

70 = 200/ (2 + 100/v)

2 + 100/v = 20/7

100/v = 20/7 – 2 = 6/7

v = 100 * 7/6 Km/h

v = 700/6 km/h

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