Physics, asked by amitkj1804, 11 months ago

A body covers half of the total distance with speed 60km/h. With what speed it covers the rest of the portion to cover the entire journey with an average speed of 90km/h.

Answers

Answered by Amanwadhwa20

1

Explanation:

Average speed = 2uv/u+v

90 = (2×60×v)/60+v

By cross multiplying

5400+90v = 120v

5400 = 30v

v = 5400/30

v =180km/hr

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