An astronaut in a spacecraft looks out the window and sees an asteroid move past in a backwards direction at 68 m/s relative to the spacecraft. if the velocity of the spacecraft is 126 m/s relative to the position of the sun, what is the velocity of the asteroid relative to the sun?
194 m/s
−194 m/s
58 m/s
−58 m/s

-194 m/s

Explanation:

We are taking as a reference point the position of the sun

In this case,

The spacecraft is moving with a velocity of  +126 m/s

The asteroid is moving  past in a backwards direction at 68 m/s relative to the spacecraft.

Speed of the asteroid -  speed of the spacecraft =  68m/s

Speed of the asteroid =  68 m/s + 126 m/s

Speed of the asteroid =  194 m/s (backwards)

Beacuse the asteroid is moving in the opposite direction of the spacecraft

The asteroid has a velocity of -194m/s relative to the position of the Sun

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