If a blue car drives 10km/h across the deck of an ocean liner that is traveling at 90km/h, what is the blue car's speed relative to the surface of the water when it drives toward the front of the ocean liner?
An airplane flies north at a speed of 150 km/h relative to the air through which it flies. If there is a tail wind of 50 km/h, what is the plane's velocity relative to the ground?
To find the blue car's speed relative to the surface of the water, we need to add the car's velocity to the velocity of the ocean liner.
The blue car's velocity can be determined by subtracting the deck speed of the ocean liner from the car's speed. The car's speed is given as 10 km/h, and since it is driving across the deck of the ocean liner, its velocity relative to the deck is also 10 km/h.
Next, we need to consider the velocity of the ocean liner. It is given that the ocean liner is traveling at a speed of 90 km/h.
Now, we can find the blue car's speed relative to the surface of the water. We add the velocity of the car (10 km/h) to the velocity of the ocean liner (90 km/h).
Therefore, the blue car's speed relative to the surface of the water when it drives toward the front of the ocean liner is 100 km/h.