Width of river is 200 m flowing with velocity $10 \text{ m/sec}$. A boat can move with speed $20 \text{ m/sec}$ perpendicular to river flow. Find minimum time to cross the river and displacement along the river bank.
Width of river is 200 m flowing with velocity $10 \text{ m/sec}$. A boat can move with speed $20 \text{ m/sec}$ perpendicular to river flow. Find minimum time to cross the river and displacement along the river bank.