Boat in a Stream — 1D
Boat speed u (m/s)
Stream speed v
r
(m/s)
Direction (exclusive)
Downstream (A → B)
Upstream (B → A)
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Downstream
Ground speed v
g
—
Time A→B
—
Effect of current
+ v
r
No progress upstream (u ≤ v
r
).
River width fixed at
500 m
. Track length fixed at
1000 m
(A↔B).