Physics, asked by sherilynpappy43, 10 months ago

If a car travels the first 30km of a 60km journey with a uniform speed of 30km/h how fast must the car travel the last 30km so that it's average speed for the entire journey will be 400km/h

Answers

Answered by prabhasharma3262

1

Answer:

90 km per hour is 90 km in 60 minutes. So in all the car has travelled 30+30 km = 60 km in a time of 20 + 30 minutes = 50 minutes.

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