Question

The speed of a motor launch with respect to still water = 7 ms-1 and the speed of stream is u = 3 ms
When the launch began travelling upstream, a float was
dropped from it. The launch travelled 4.2 km upstream,
turned about and caught up with the float. How long is it
before the launch reaches the float ? plss tell as soon as possible with explanation ​and no spammers please​

Answer 1

Answer:

Explanation:

. When the boat starts moving upstream a float was dropped from it. The boat travels 4.2 km up stream turned about and caught up with the float. The time is taken by the boat to reach the float is:

Answer 2

Answer:

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