[" Q4.A boat is sent across a river with a velocity of "8km/h" .if the resultant velocity of boat is "10km/h" ,the river."],[" calculate the velocity of the river."]

A boat crosses a river with a velocity of 8(km)/(h) . If the resulting velocity of boat is 10(km)/(h) then the velocity of river water is

A boat crosses a river with a velocity of 8(km)/(h) . If the resulting velocity of boat is 10(km)/(h) then the velocity of river water is

A man swims across the river which flows with a velocity of 3 km/h due east.if the velocity of man relative to water is 4 km/h due north, then What is his velocity relative to the shore of the river?

A man swims across the river which flows with a velocity of 3 km/h due east.if the velocity of man relative to water is 4 km/h due north, then How long does he take to across the river if the river is 1 km wide?

A man swims across the river which flows with a velocity of 3 km/h due east. If the velocity of man relative to water is 4 km/h due north, then what is his velocity and its direction relative to the shore of the river?