I would say the correct answer would be light travels faster in medium 3 then medium 2.
The proton would be 2 and d a part of 1 then calculate that hope this helped
Assuming north as positive direction, the initial and final velocities of the ball are:

(with negative sign since it is due south)

the time taken is

, so the average acceleration of the ball is given by

And the positive sign tells us the direction of the acceleration is north.
Answer:
Explanation:
El 15 de febrero de 1564 nacía Galileo Galilei (1564-1642). Galileo Galilei es una de las figuras claves de la historia de la Ciencia, pudiéndosele considerar el primero que aplicó el método científico experimental-matemático.
Answer:
accuracy refers to the deviation of a measurement from a standard or true value of the quantity being measured