🏊 Swimmer
📈 Actual Path
🌊 River Flow →
🏁 Start → Finish
Time to cross
0.00
s
Downstream Drift
0.0
m
Resultant Speed
0.00
m/s
v_sx (horizontal)
0.00
m/s
v_s = 2.0 m/s at 0° | v_r = 1.5 m/s →
v_net = v_s + v_r = (0.00, 2.00) m/s
🎯 Optimal Angle for Zero Drift
θ = 0°
(swim upstream to cancel river flow)
🔍 What to Observe
- At θ = 0°, time = w/v_s (minimum time)
- Drift increases with river speed (v_r)
- To reach directly opposite, swim upstream at θ = sin⁻¹(v_r/v_s)
- If v_s > v_r, zero drift is possible
- If v_s ≤ v_r, zero drift is impossible