Question

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

Answer 1

POSITIVE 194 m/s

Step-by-step explanation:

Answer 2

-194 m/s

Step-by-step 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