Motion: Position and Motion

The video explains that while the Earth appears motionless, it spins at over 1,600 km/h. Observing a sunset helps us understand that the Earth is moving, not the sun. The concept of a frame of reference is introduced to explain why we don't feel Earth's motion. Examples, like a moving truck, illustrate how stationary backgrounds help us perceive motion.

What is the actual motion of the Earth as described in the video?

• The Earth is stationary.

• The Earth orbits the moon.

• The Earth moves in a straight line.

• The Earth spins on its axis.

When observing a sunset, what is actually moving?

• The Earth is moving.

• Both the sun and the Earth are moving.

• Neither the sun nor the Earth is moving.

• The sun is moving.

Why don't we feel the Earth spinning?

• Due to the Earth's slow rotation.

• Because the Earth is not spinning.

• Because of our frame of reference.

• Because the sun's gravity cancels it out.

What is a frame of reference?

• A tool to calculate distance.

• A moving object used to measure speed.

• A stationary object used to measure motion.

• A method to stop motion.

In the example of the truck, why do we perceive it as moving?

• Because the truck is moving relative to a stationary background.

• Because the background is moving.

• Because the truck is faster than the background.

• Because the truck is stationary.