Unit 15 Test - Special Relativity

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Mr. Hermes Instructor

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1. Newton's model for motion, often called Newtonian Physics, derives the formula:

Velocity = Distance x Time

Velocity = Distance / Time

Velocity = Time / Distance

Shoot. I do not remember anything from the first semester...

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2. What is the first postulate of special relativity?

The Laws of Physics are the same for all inertial frames.

The Laws of Physics vary for all inertial frames.

The Laws of Physics are relative to their inertial frames

The Laws of Physics do not apply to sleeping students.

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3. What is the second postulate of special relativity?

The Speed of Light is the same for all observers.

The Speed of Light varies for all observers..

The Speed of Light is relative to the observer's inertial frame.

You will get a speeding ticket if you drive faster than the Speed of Light

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4. The illustration that Albert Einstein and most scientists use to illustrate Special Relativity is that of a moving what?

Airplane

Car

Train

Mr. Potato Head

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5. What is Length Contraction??

When an object moving from point A to point B takes a shorter path of travel.

When lengths are adjusted from astronomical units to standard units.

When a moving object's length is measured to be shorter than its proper length.

When you retract a tape measure after measuring something.

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6. What is Time Dilation?

When an object is moving relative to you, so time in that reference frame slows down.

When a timer is moving at near light speeds relative to a stationary reference frame.

When a Physics lesson seems to go on and on forever.

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7. Because time can pass differently for people depending on their frame of reference, there is also no what?

Universal Frame of Reference

Universal Concept of Simultaneity

Universal Monetary Rate

Excuse for giving students a tardy for being late to class.

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8. We easily recognize the three dimensions of space, but in reality we should recognize four dimensions. What is the fourth dimension?

Time

Space

Motion

Twilight Zone

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9. Length contraction and time dilation happens for objects moving a regular speeds too. Why don't we notice it?

Too fast to measure it.

Too tiny to notice it.

Only occurs in outer space and in laboratories.

We were sleeping during the class lesson. We didn't notice anything...

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10. We are used to seeing the world at much, much slower speeds than light. All of which is to say that when you start to analyze things moving very fast, the universe becomes....?

a very strange place.

a very simple place.

a very windy place.

a very berry sundae.

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