Question

A man reaches his home town, 150 km away from his city, at 30 km
per hour and returns again to his city at 50 km per hour. What is the
Unit 2:
man's average speed for the double journey in m/s?​

Answer 1

In the question,

x = 30 km/h

y = 50 km/h

Average speed = 2xy/x+y

2×30×50/30+50

3000/80

37.5 km/h

We know,

to covert speed into m/sec we have formula =

$5a \div 18$

5×37.5/18 m/sec

187.5/18 m/sec

10.41 m/sec

Therefo, his average speed is 10.41 m/sec

Answer 2

Answer:

Arteries blood vessel carry blood from heart to other part of body

Step-by-step explanation:

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