1.

A toy cyclist completes one round of a square track of side 2 min 40 seconds. What will be the displacement at theend of 3 minutes?

Answer»

52 m
zero
16 m
`2sqrt2m`

Solution :TOTAL TIME of motion on square track
`= 3 min = 3 xx 60 = 180 s`
Time period of revolution= 40 s
`:.` Displacement in160 s `(=4xx 40) = 0 `, as toy CYCLIST will be reaching at the straight point .
Thus displacement in 18 s displacement in 20 s
`=sqrt((20)^2+(2)^2)=2sqrt2` m


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