An astronaut in a rocket with a speed v-0.6c relative to Earth performs a collision experiment and concludes that both momentum and energy are conserved.What would an Earth observer conclude?
A) Neither energy nor momentum is conserved.
B) The collision never happened because the two objects are never in the same place at the same time.
C) Energy is conserved,but momentum is not.
D) Momentum is conserved,but energy is not.
E) Both momentum and energy are conserved.

Question

Quizplus · Accepted Answer

From the perspective of the astronaut, both momentum and energy are conserved. This is because the laws of physics are the same in all inertial reference frames, including the rocket's frame of reference. Therefore, an Earth observer would also conclude that both momentum and energy are conserved. This is consistent with the principle of relativity, which states that the laws of physics are the same in all inertial reference frames.

An Astronaut in a Rocket with a Speed V-0