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.

We do not usually observe relativistic effects in our daily lives because

• we are moving at speeds much less than c.

• we are much larger than atoms.

• we are much heavier than elementary particles.

• we are much lighter than stars.

The speed of light (c) =

• 3 x 10⁸ miles/hour
• 3 x 10⁸ meters/second
• 3 x 10⁸ kilometers/hour
• none of these

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NGSS.HS-PS4-1

What does the relativity of simultaneity say?

• Two events may occur at the same time in one reference frame, but not another.

• If two events occur at the same time in one reference frame, they will occur at the same time in all reference frames.

A rocket leaves Earth and travels to a star that is 20 light years (one light year equals 9.46E15 meters) 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 Earth is 

• 25 years
• 20 years
• 16 years
• 12 years

Why is Special Relativity "special"?

• It's for all cases

• It's only for objects moving at a constant velocity

• It's only for accelerating objects

• It's for objects rotating

One of the most startling consequences of time dilation is that a moving clock ______________ relative to a stationary observer.

• Speeds up

• Slows down

A train slowing down as it climbs a hill is an example of an inertial frame of of reference.

• True
• False