Which of the following statements are IMPOSSIBLE? Choose all that apply. 1. The

Question

Which of the following statements are IMPOSSIBLE? Choose all that apply. 1. The rocket's speed was measured to be1.07c.
2. The rocket's rest lengthis 126 m. An observer flying by measured the rocket to be 777 mlong.
3. A rocket flying by the Sunat 0.85c measured the speed of the photons (particles oflight) emitted by the Sun to be 0.52c.
4. An inertial referenceframe had an acceleration of 9.8 m/s2.
5. The proper time intervalbetween two events was measured to be 202 s. The time intervalbetween the same two events (as measured by an observer not in theproper frame) was 156 s. 1. The rocket's speed was measured to be1.07c.
2. The rocket's rest lengthis 126 m. An observer flying by measured the rocket to be 777 mlong.
3. A rocket flying by the Sunat 0.85c measured the speed of the photons (particles oflight) emitted by the Sun to be 0.52c.
4. An inertial referenceframe had an acceleration of 9.8 m/s2.
5. The proper time intervalbetween two events was measured to be 202 s. The time intervalbetween the same two events (as measured by an observer not in theproper frame) was 156 s.

Explanation / Answer

All of the above are impossible. 1. is impossible - since no physical object can attain a speedfaster than light 2. is impossible - length contracts on speeding up, not expands.substituting these values in relativity equation will return thevelocity to be > c 3. is impossible - Velocity of light is constant (i.e. observed asc only) irrespective of velocity of observer. 4. is impossible - an inertial frame can not be accelerated 5. is impossible - time dilation occurs from proper frame. same aspoint 2.

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