Question

4. Two stations A and B are 2-5 km apart. A man walks
from A to B with a speed of 5 km/hr and returns
back with a speed of 7.5 km/hr. Determine his
average velocity and average speed in the following
intervals :
(i) 0 to 30 minutes, (ii) 0 to 40 minutes, (iii) 0 to 50
minutes.
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Answer 1

Answer:

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