Answer to Question #291847 in Mechanics | Relativity for bookaddict

Question

you are below deck in a ship, in a room with no windows. there are lamps hanging down from the ceiling and there are marbles on the flat floor. by seeing if the lamps hang straight down and if the marbles start to move about, what can u tell?

A. you can tell whether you are moving or at rest.

B. you can tell whether you are accelerating or not.

C. you can tell whether you are changing speed but cannot tell whether you are changing direction.

D. you can tell whether you are changing direction but cannot tell whether you are changing speed.

Answer 1

$\text{Galileo's principle is not applicable in non-inertial frames of reference.}$

$\text{An observer will notice changes if direction or speed changes in the }\newline \text{frame of reference.}$

$\text{In other words, the frame of reference has an acceleration.}$

$\text{Answer: B.}$