SPECIAL RELATIVITY REVIEWER

Imagine you're sitting in a moving car, tossing a ball straight up. How does the ball appear to move from your perspective?

• The ball moves in a curved path.

• The ball moves straight up and down.

• The ball moves backward.

• The ball doesn’t move at all.

Imagine you're sitting in a moving car, tossing a ball straight up. Now, how does the ball’s motion appear to an observer standing outside the car?

• The ball moves straight up and down.

• The ball follows a diagonal trajectory.

• The ball stays in the same position.

• The ball moves backward.

Imagine you're sitting in a car at a rate of 80 km/h, tossing a ball straight up. What is your speed from your perspective?

• zero

• 80 km/h

Imagine you're sitting in a car at a rate of 80 km/h, tossing a ball straight up. From an outside observer's perspective, how fast are you moving?

• zero

• 80 km/h

A bus moves at 80 km/h. A bike moves at 30 km/h in the same direction. How fast does the bus appear to move relative to the bike?

• 80km/h

• 30 km/h

• 110 km/h

• 50 km/h

A bus moves at 80 km/h. A bike moves at 30 km/h in the same direction. How fast does the bus appear to move relative to an outside observer standing on the ground.

• 80km/h

• 30 km/h

• 110 km/h

• 50 km/h

Which statement best describes the speed of light

• It is measured differently depending on how fast the observer is moving.

• It only appears constant when the observer is stationary.

• It increases when an observer moves toward the light source.

• It is always the same (c) for all observers, regardless of motion.

The laws of physics are the same in all inertial frames.

• First postulate of special relativity

• Second postulate of special relativity

What does the second postulate of special relativity state?

• The speed of light depends on the motion of the observer.

• The speed of light is different in different frames of reference.

• The laws of physics vary in different inertial frames.

• The speed of light is the same in all inertial frames, regardless of the motion of the source or observer.

What happens to time and length for objects moving close to the speed of light?

• Time runs faster, and objects become longer.

• Time runs the same, and length does not change.

• Time slows down, and objects contract in length.

• Time stops, and length disappears.