How do you find the angle of a river boat problem?

The velocity of the boat relative to the ground should be along the line AB. Let →vb/r v → b / r makes an angle θ with AB. vb/rcos(30+θ)=vbcos30vb/rsin(30+θ)=vr+vbsin30 v b / r cos ⁡ ( 30 + θ ) = v b cos ⁡ 30 v b / r sin ⁡ ( 30 + θ ) = v r + v b sin ⁡ Substitute values, square and add to get 49=v2b+3vb+9.

What is the motion of river?

The current in a river is the motion of water along the direction of the river. In other words, it is the flow of the water in the river.

What is drift in river?

Answer: Due to speed of water flow in river, a person either swimming or floating stationary in the river experiences a pushing force along the flow direction. This is known as drift.

What are the solutions of river pollution?

The simplest solution for water pollution prevention is to be responsible with any chemical use: Read and explicitly follow the directions for mixing and use. Use organic options whenever possible. Check your local stormwater division for suggestions.

How does river velocity affect time to cross the river?

The river velocity, being perpendicular to the crossways motion of the boat, does not affect the time to cross the river. Any alteration in the river velocity will have no affect upon the time to cross the river.

How does the river velocity affect the displacement down stream?

That is, the across-the-river component of displacement adds to the downstream displacement to equal the resulting displacement. And likewise, the boat velocity (across the river) adds to the river velocity (down the river) to equal the resulting velocity.

What is drift velocity in river?

Answer: Due to speed of water flow in river, a person either swimming or floating stationary in the river experiences a pushing force along the flow direction. This is known as drift. Answered by Expert 1st February 2018, 2:10 PM. Tags: drift-velocity.

What are the problems of rivers?

Many of the major rivers along which a number of ancient civilizations lived, now face serious environmental pollution due to our varied urbanized human lifestyles: Contaminated Rain-water run-off. Soil erosion. Agricultural pesticides and chemicals.

How does velocity affect the time to cross the river?

The time to cross the river is dependent upon the velocity at which the boat crosses the river. It is only the component of motion directed across the river (i.e., the boat velocity) that affects the time to travel the distance directly across the river (80 m in this case).

How does the river current affect the motion of the boat?

The river current influences the motion of the boat and carries it downstream. The motorboat may be moving with a velocity of 4 m/s directly across the river, yet the resultant velocity of the boat will be greater than 4 m/s and at an angle in the downstream direction.

How do you find the resultant velocity of a motorboat?

The resultant velocity of the motorboat can be determined in the same manner as was done for the plane. The resultant velocity of the boat is the vector sum of the boat velocity and the river velocity.

When is a boat going up a river?

A boat is going up a river when it wants to go to the shore. What angle must it travel at to go perfectly across the river. This is a classic vector problem…. AboutPressCopyrightContact usCreatorsAdvertiseDevelopersTermsPrivacyPolicy & SafetyHow YouTube worksTest new features