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 long horizontal belt is moving from left to right with a uniform spe

1.	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:
Answer» 6 m/s 2 m/s 1.5 m/s 4 m/s Solution :`v_("in/belt") = 4 m//s` `v_("belt/ground") = 2 m//s` `v_("in/ground") = 6 m//s`