Understanding Concepts of Motion and Gravity

Albert invites Jakob to Prague to work on accelerated motion, but Jakob has an offer from Philipp Lenard. Albert shares a thought experiment about an elevator, leading to a realization that acceleration and gravity are the same, a key insight for relativity.

Why does Albert invite Jakob to Prague?

• To work on a new project

• To offer him a university position

• To introduce him to Philipp Lenard

• To attend a conference

What is Jakob's concern about working with Philipp Lenard?

• Lenard's reputation as a taskmaster

• Lenard's lack of experience

• The location of Lenard's lab

• The salary offered by Lenard

What does Albert describe feeling before his lecture in Salzburg?

• Indifference

• Confidence

• Excitement

• Nervousness

In Albert's thought experiment, what happens when the elevator is falling?

• He feels dizzy

• He feels no weight

• He feels heavier

• He feels lighter

What does Albert realize about a falling man?

• He feels lighter

• He feels the floor's pressure

• He feels no pressure

• He feels his own weight

What effect would a rising elevator have according to Albert?

• It would make him feel lighter

• It would make him feel dizzy

• It would make him feel heavier

• It would make him feel weightless

What key insight does Albert gain about acceleration and gravity?

• They are opposites

• They are unrelated

• They are the same thing

• They are independent forces

How does Albert describe his realization about acceleration and gravity?

• Difficult and challenging

• Unimportant and trivial

• Simple and beautiful

• Complicated and confusing