Wind Direction and Resultant Velocity

The video tutorial explains how to calculate the resultant velocity of an airplane encountering wind. It begins with a problem statement, followed by drawing diagrams to visualize vectors. The tutorial then uses cosine law to calculate the resultant speed and sign law to determine the direction. The final answer is presented as a speed and direction.

What is the initial speed of the airplane before encountering the wind?

• 100 km/h

• 535 km/h

• 450 km/h

• 55 km/h

From which direction does the wind originate?

• East 55 degrees South

• South 55 degrees East

• West 55 degrees North

• North 55 degrees West

What is the purpose of drawing a compass in this problem?

• To measure the speed of the airplane

• To determine the direction of the wind

• To calculate the distance traveled

• To find the altitude of the airplane

What is the angle between the wind direction and the south direction?

• 90 degrees

• 180 degrees

• 145 degrees

• 55 degrees

Which law is used to calculate the resultant speed of the airplane?

• Cosine Law

• Sine Law

• Newton's Law

• Pythagorean Theorem

What is the resultant speed of the airplane after encountering the wind?

• 600 km/h

• 535 km/h

• 100 km/h

• 450 km/h

Which law is applied to find the direction of the resultant velocity?

• Law of Inertia

• Pythagorean Theorem

• Cosine Law

• Sine Law

What is the angle of the resultant direction with respect to the south?

• 55 degrees towards the west

• 145 degrees towards the south

• 90 degrees towards the north

• 6.15 degrees towards the east

How is the final direction of the resultant velocity expressed?

• West 6.15 degrees North

• East 6.15 degrees South

• North 6.15 degrees West

• South 6.15 degrees East

What is the final resultant velocity of the airplane?

• 535 km/h South 6.15 degrees East

• 600 km/h North

• 450 km/h South

• 100 km/h East