Physics - Special Relativity

Which of the following statements is not true according to the theory of relativity? 

• As an object increases speed its mass increases. 
• As an object increases speed its length increases. 
• As an object increases speed its kinetic energy increases. 
• As an object increases speed its momentum increases. 

Compared to clocks in a stationary reference frame moving clocks run 

• faster
• slower
• at the same rate

When you approach a light source, the light from that source has a speed 

• greater than c. 
• less than c. 
• equal to c.
  

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NGSS.HS-PS4-1

Which of the following is true regarding the accuracy of Special Relativity's predictions.

• Special Relativity is only accurate at close to the speed of light
• Special Relativity is only accurate at low/everyday speeds
• Special Relativity is accurate at all speeds
• Special Relativity is only accurate when referring to the motion of light

Real-life Astronauts experience significant time dilation when they go on trips to outer space because of the high rates of speed they are moving at.

• true
• false

If you are riding in a spaceship travelling at .7c  (70% the speed of light)  and you shine a headlight out in front of you, how fast would a stationary observer perceive that beam of light to be travelling?

• 1.7 c 
• .7 c
• c
• .3c

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NGSS.HS-PS4-3

A rocket leaves Earth and travels to a star that is 20 light years as seen by the Earth. The speed of the rocket is 0.8c relative to the Earth.  The time for the trip as measured on by the astronauts in the spaceship is   

• 25 years
• 20 years
• 16 years

Who was the creator of a special theory of relativity? It showed calculations of time and motion.

• Albert Einstein
• Isaac Newton
• Galileo

As an object approaches the speed of light, time for that object speeds up, and it ages more quickly.

• True
• False

How could you wind up being younger than your little sister?

• You could get on a spaceship travelling close to the speed of light, while your sister stays here on Earth
• Your sister could get on a spaceship travelling close to the speed of light, while you stay here on Earth
• This scenario is not even theoretically possible (meaning the laws of physics does not allow this to happen)