A man wants to reach from A to the opposite corner of the square C...

A man wants to reach from A to the opposite corner of the square C (Fig. 4.10). The sides of the square are 100 m. A central square of 50m × 50m is filled with sand. Outside this square, he can walk at a speed 1 m/s. In the central square, he can walk only at a speed of v m/s (v < 1). What is smallest value of v for which he can reach faster via a straight path through the sand than any path in the square outside the sand?
A man wants to reach from A to the opposite corner of the square C (Fig. 4.10). The sides of the square are 100 m. A

Options

A0.46m/s
B0.81m/s
C1.11m/s
D1.96m/s

Correct answer

B. 0.81m/s

Step-by-step solution

Correct Option is : (B)
0.81m/s

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