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A long horizontal belt is moving from le...

A long horizontal belt is moving from left to right with a uniform speed 2 m/s. There are two ink marks A and B on the belt 60 m apart. An insect runs on the belt to the fro between A and B such that its speed releatice to belt is constant and equals 4 m/s. When the insect is moving on the belt in the directoin of motion of the belt, its speed as observed by a person standing on ground will be:

A

6 m/s

B

2 m/s

C

1.5 m/s

D

4 m/s

Text Solution

Verified by Experts

The correct Answer is:
A
`v_("in/belt") = 4 m//s`
`v_("belt/ground") = 2 m//s`
`v_("in/ground") = 6 m//s`
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