2. A spaceship moving 0.80c direction away from Earth fires a missile that the spaceship measures to be moving at 0.80c perpendicular to the ship’s direction of travel. Find the velocity components and speed of the missile as measured from Earth.

Taking the direction of the spaceship as the x-axis.

And the direction of the missile perpendicular to the spaceship's motion as the y-axis.

Velocity of the missile as measured from the earth = (0.8cî + 0.48cj)

Speed of the missile relative to Earth = 0.93c

Explanation:

The solution to this question is presented in the attached image to this answer.

v=ir = 3x15 =45 v

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