Ch. 5-6 Flashcards
A constant acceleration, such as that of an object in free fall
Uniform acceleration
Energy of position
Potential energy
The maximum constant speed of an object falling in the atmosphere
Terminal velocity
Process of gaining thermal energy
Heating
Unit of force
Newton
A system of colliding objects, the sum of their momentums before the collisions is equal to the sum of their momentum afterwards
Conservation of momentum
Energy of motion
Kinetic energy
The tendency of all matter to resist change
Inertia
Comparing the amount of usable energy produced with the amount available before the transformation
Efficiency
Contact force that opposes the movement of objects past each other
Friction
The ability to do work
Energy
Unit of energy
Joule
For every force exerted on a system, the system exerts and equal but opposite reactions
Action reaction principle
Objects that fall due to gravity alone
Free fall
Push or pull on a system
Force
Who was the first person to write about forces?
Archimedes
Which of the following has the most inertia?
The planet Jupiter
Air resistance increases with increasing
Surface area
Which of the following situations does not involve friction
An object free of gravitational pull
Energy is not
Created or destroyed
Which nuclear process releases energy when two atoms merge?
Fusion
Which of the following does not possess magnetic energy?
Wood
Which type of collision conserves both energy and momentum?
Elastic
Which of the following is not a type of raiment energy?
Sound waves
Which of the following is the result of a field force?
When you jump into the air, you land on the ground
Which nuclear releases energy when one atom splits?
Fission
Air resistance is a form of __________.
Friction
Drag
A sea turtle swimming against a current experiences __________ friction.
Fluid
A car stopped on a hill experiences _________ friction.
Static
A sled sliding down a hill experiences _________ friction.
Kinetic
How can you tell when the forces acting on a systems are balanced?
No net movement
What two ever-present forces affect all motion on earth?
Friction
Gravitational force
The largest potential source of energy in the universe is ___________.
Mass energy
Radiant energy involves the interaction of __________ and _________ energies.
Electrical
Magnetic
The thermal energy of an object is the total _______ energies of all particles in the object.
Kinetic
_________ is the losing of heat.
Cooling
A source of the sums energy
Nuclear energy
An apple hanging from a tree
Mechanical potential energy
A shock from pulling on a wool sweater
Electrical energy
Gasoline burning in a car engine
Chemical energy
A students blaring trumpet
Acoustic energy
A rolling bowling ball
Mechanical kinetic energy
A warm pot of water
Thermal energy
A compass pointing north
Magnetic energy
X-raying a broken bone
Electromagnetic energy
