A toy cyclist completes one round of a square track of side 2 m in 40s. What will be the displacement at the end of 3 min ?

Options

A. 52 m
B. Zero
C. 16 m
D. `2sqrt(2)m`

Answer

D

Explanation

Displacement is distance from initial to final position.
`" In "40s-1"` round
`" In "3 times 60=180s-4""1/2`round
Displacement for 4 rounds is zero.
For `l/2` round, length of diagonal `=2sqrt(2)m`.