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Chapter 16: Relativity: Momentum, Mass, Energy, and Gravity
Chapter 16: Relativity: Momentum, Mass, Energy, and Gravity Questions
24
Physics
11th Grade
12/30/2011

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Term
The speed of light is the _______ __________ for all matter
Definition
speed limit
Term
Two spaceships both traveling close to C toward each other. Is the relative speed over C?
Definition
No. Space-time for each spaceship differs in such a way that the relative speed is still less than the speed of light.
Term
There are/are not any circumstances where the relative speeds of any material surpass the speed of light?
Definition
are not
Term
For a moving object. Which changes space or time?
Definition
Both
Term
Moving objects contract when viewed by an outside observer. Which way does it contract?
Definition
Direction of motion
Term
Changes due to alterations of space-time are always seen in the frame-of-reference of the “________ ________”
Definition
other guy
Term
The contraction of speeding objects is the contraction of ________ itself.
Definition
space
Term
What is Newton’s equation for momentum?
Definition
p = mv
Term
Given Einstein’s Relativity Equation for Momentum: p = mv/(1-(v2/c2))1/2 , when V is slow, what is p?
Definition
p = mv, the same as Newton's
Term
Given Einstein’s Relativity Equation for Momentum: p = mv/(1-(v2/c2))1/2 , when V is high, what is p?
Definition
p gets much larger than just mv
Term
Given Einstein’s Relativity Equation for Momentum: p = mv/(1-(v2/c2))1/2 , what is m?
Definition
rest mass
Term
Define: rest mass
Definition
A true constant, a property of the object at all speeds
Term
The more momentum a high speed particle has, the harder it is to _____________ it.
Definition
deflect
Term
___________ is a way of expressing a resistance to change
Definition
Momentum
Term
Einstein’s Relativity Equation for Energy is: E = mc2/(1-(v2/c2))1/2, when V is 0, what is the Energy of an object at rest Eo?
Definition
Eo = mc2
Term
What is the real name for: Eo = mc2?
Definition
Rest mass formula
Term
Kinetic Energy is the difference between Total Energy and Rest Energy. So, E = mc2/(1-(v2/c2))1/2 -
What is Eo?
Definition
mc2
Term
Even at rest, an object has _________ which is locked in its mass.
Definition
energy
Term
As the speed of an object approaches the speed of light, both its ____________ and __________ approach infinity, so there is no way the speed of light can be reached.
Definition
momentum
energy
Term
Can light be brought to rest?
Definition
No. Light has no rest mass. Light always travels at the same speed, c.
Term
Define: correspondence principle.
Definition
New and old theories must overlap and agree in areas where old theories have been tested.
Term
Using the Relativistic Rest Mass formula: Eo = mc2, are mass and energy equivalent?
Definition
Yes. Anything with mass also has energy
Term
During any reaction, the total __________ remains the same
Definition
energy
Term
If mass and energy are equivalent. What happens if mass loss happens?
Definition
Energy is released
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