If Zephyr is standing on the open deck of a ferry moving forward and looks up to see a seagull flying overhead in the same direction as the ferry, will the seagull appear to Zephyr to be flying faster, slower, or at the same speed relative to the ferry's motion? Provide a very brief response.
The seagull will appear to Zephyr to be flying at its own speed relative to the air around it; however, if the ferry is moving in the same direction as the seagull, the relative speed of the seagull to Zephyr (and the ferry) will look slower. This is because the motion of the ferry is added to Zephyr's frame of reference. If the seagull's speed relative to the air and the ferry's speed are the same, the seagull would appear to hover to someone on the ferry. If the ferry moves faster, the seagull would seem to fly backward relative to Zephyr's position. If the ferry is slower, the seagull would still move forward relative to Zephyr, but not as fast as it would if observed from a stationary point on land.