Question

6.
A man moves on a straight path. He travels total distance
1. He travels half of his journey with speed 10 ms. The
remaining part of journey was covered by him with speed
20 m s' for half of remaining time and with velocity
40 ms for other half of remaining time. The average
speed is
(a) 15 m s
(b) 70/3ms
(c) 60 ms
(d) 10 ms
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Answer 1

Answer:

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