Physics, asked by AviDG1575, 6 months ago

A car travel first half of distance speed 60 km/h what should be speed for second half so that average speed is 90 km/h

Answers

Answered by Anonymous

1

Answer:

it should travel at 120 km/hr

Answered by rokrsaurabh31

0

Answer:

180 km/hr

Explanation:

X and Y are speeds

X=60

Y=?

Avg speed = 2xy/x+y

90 = 2*60*y/60+y

5400+90y=120y

5400=30y

Y=180

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