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Physics Vocabulary

Physics Vocabulary

memorize.aimemorize.ai (lvl 286)
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36 cards
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Section 1

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There is no noticeable change in velocity because the mass is _____________ compared to the bug.

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Physics
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Last updated

6 years ago

Date created

Mar 1, 2020

Cards (36)

Section 1

(36 cards)

There is no noticeable change in velocity because the mass is _____________ compared to the bug.

Front

huge

Back

Closed system

Front

Nothing enters or leaves.

Back

Heat

Front

Energy transfer from one object to another because of a temperature difference. (21.2)

Back

Work

Front

The product of the force on an object and the distance through which the object is moved (when force is constant and motion is in a straight line in the direction of the force); measured in joules. (9.1)

Back

All changes within a system

Front

cancel each other out so total momentum stays the same.

Back

Special case of Newton's 3rd Law

Front

The action and reaction are not on the same object.

Back

Elastic Collision

Front

Total KE remains the same before and after collision. Objects involved in collision "bounce" off of each other.

Back

The time of impact is the _____ for both.

Front

same

Back

Mechanical energy

Front

Energy because of the position or movement of something; potential energy or kinetic (or a combination of both). (9.3)

Back

Two types of collision.

Front

1. Elastic 2. Inelastic

Back

A spacecraft in outer space increases velocity by firing its rockets. How can hot gases escaping from its rockets change the velocity of the craft when there is nothing in space for the gases to push against?

Front

Back

Momentum

Front

Related to the velocity and the mass. Mass times velocity. Big truck driving towards the right then a big bird hits the windshield. The truck has a velocity going to the right and the bird has a velocity going to the left.

Back

Law of Conservation of Momentum

Front

In closed, isolated system - total momentum remains constant.

Back

Newton's Third Law

Front

For every action force, there is an equal and opposite reaction force. Gravity pulling down and the normal force is pushing up. fg=fn

Back

The white cue ball travels across a pool table and collides with the stationary eight ball. The two ball have equal mass. After the collision the cue ball is at rest. What must be true of the speed of the eight ball?

Front

Back

Isolated

Front

No net external forces act on system.

Back

Vector

Front

An arrow whose length represents the magnitude of a quantity and whose direction represents the direction of the quantity. (2.1)

Back

Impact

Front

Not in book - will send after Ms. Haynie provides definition in class.

Back

Elastic collision

Front

Collision in which the colliding objects rebound without lasting deformation and heat generation. (8.5) times:..

Back

Both the bus and the bug experience the same change in ____________.

Front

momentum

Back

Kinetic energy

Front

Kinetic energy equal to half the mass times velocity squared energy.

Back

Inelastic Collision

Front

Some KE is lost as heat, sound. Objects involved in collision become stuck together or become deformed.

Back

The bug has a greater change in velocity because the mass is ________________.

Front

much smaller than the bus

Back

Impulse

Front

The product of force and the time interval during which the force acts. Impulse equals change of momentum. (8.2)

Back

Potential energy

Front

The electric potential difference (voltage) between two points. Free charge flows when there is a difference and will continue until the two points reach a common potential (34.1):

Back

Bus traveling down the highway struck by bug which splatters on windshield

Front

Same force acts on both bug and bus. Time of impact is the same for both. Both experience same impulse.

Back

Power

Front

A price at which you work or energy becomes equal to the work done or transformed energy divided by time; measured in watts(8.2)

Back

Momentum

Front

The product of mass and velocity of an object (provided that the speed is much much less than the speed of light). It has magnitude and direction (a vector quantity). Also it called momentum.(8.1)

Back

How to solve conservation of momentum problem?

Front

a. Read problem. b. Identify objects' masses and velocities before and after collision. c. Remember - if objects become stuck together - _______ their massess after collision. d. Use x to represent missing velocity. e. Calculate objects' momentums before and after collision. f. Set up momentums into algebra equation with equal sign separating before and after collision. g. Solve for x.

Back

The ______ force acts on both the bug and bus.

Front

same

Back

Law of Conservation of momentum

Front

In the absence of a net external force, the momentum of an object or set of objects not change jobs:

Back

The bug suffers ________a.______ because it has a _____b._____.

Front

a. huge change in velocity b. a small mass

Back

Two trucks that look the same collide. One was originally at rest. The trucks stick together and move off at more than half the original speed of the moving truck. What can you say about the contents of the two trucks?

Front

Back

Newton's First Law

Front

(inertia) An object at rest stays at rest, an object in motion stays in motion unless acted on by a force.When mass is conserved that means you have mass A and then at the end you have mass B.Conservation means it has to be the same.

Back

Newton's Second Law

Front

The net force on an object is its mass times its acceleration. This is motion.

Back

Conserved

Front

Term applied to a physical quantity, such as momentum, energy, or electrical charge, which remains unchanged during interactions. (8.4)

Back