Where is our sun located in the milky way answers?

It's between the Sagittarius and Perseus Arms of the Milky Way. Our sun is located in the Orion Arm, or Orion Spur, of the Milky Way galaxy. It's a minor spiral arm, located between two other arms

c)as speed changes, wavelength and frequency change.

everything changes!

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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