Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
36 Cards in this Set
- Front
- Back
|
The product of force and the amount of displacement along the line of action of that force. |
Work |
|
|
The average magnitude of the force The direction of the force |
The force |
|
|
The magnitude of the change of position The direction of the change of position |
The displacement |
|
|
work is performed when the direction of the force and the direction of motion are the same •ascent phase of the bench press •Throwing a ball •push off (upward) phase of a jump |
Positive work |
|
|
work is performed when the direction of the force and the direction of motion are the opposite •descent phase of the bench press •catching •landing phase of a jump |
Negative work |
|
|
The rate of doing work |
Power |
|
|
is defined as the capacity to do work (scalar) •Many form •No more created, only converted •chemical, sound, heat, nuclear, mechanical |
Energy |
|
|
energy due to motion •the mass •the velocity of the object |
Kinetic energy |
|
|
energy due to position or deformation |
Potential Energy |
|
|
Two forms of PE |
Gravitational and Strain |
|
|
energy due to an object’s position relative to the earth |
Gravitational PE |
|
|
due to the deformation of an object |
Strain PE |
|
|
The work done by an external force acting on an object causes a change in the mechanical energy of the object |
Work-Energy Relationship |
|
|
The point in system in which the total mass is concentrated. |
Center of mass |
|
|
Who studied the concept of center of gravity or weight |
Archimedes of Syracuse |
|
|
impulse produce change in momentum |
Impulse momentum theorem |
|
|
•property of moving object •vector quantity •inertia in motion •the product of mass and velocity |
Momentum |
|
|
in the absence of external force that acts on a system what will be the total in your momentum in the system |
The total linear momentum will remain constant |
|
|
A necessary requirement for periodic motion is a restoring force A motion that repeat about a point of stable equilibrium |
Periodic Motion |
|
|
this is the maximum displacement from the equilibrium position. |
Amplitude (A) |
|
|
this is the time for one cycle |
Period |
|
|
is the number of cycles in a unit of time. |
Frequency |
|
|
also known as radial or circular frequency, it measures angular displacement per unit time. |
Angular frequency |
|
|
The distance between any two successive points in a wave that are in phase with each other. |
Wavelength |
|
|
is a disturbance travelling through a medium or in a vacuum. |
Waves |
|
|
waves that require a medium to travel through. |
Mechanical wave |
|
|
particles of the medium vibrate parallel to the direction of the wave propagation |
Longitudinal Waves |
|
|
particles of the medium are vibrating perpendicularly to the direction of wave propagation |
Transverse waves |
|
|
are longitudinal waves produced by a vibrating body. They travel through a medium, such as solid, liquid, or gas. |
Sound wave |
|
|
is equal to the difference between the frequencies of two sounds. |
Beat and frequency |
|
|
determined largely by the frequency of the wave reaching the ear. |
Pitch |
|
|
depends on the amplitude of the wave reaching the ear |
Loudness |
|
|
of a sound depends on the number and relative amplitudes of the overtones present in the wave reaching the ear. |
Quality |
|
|
When the source of sound is approaching a stationary listener, increasing frequency can be heard, and vice versa |
Doppler effect |
|
|
increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid’s potential energy. |
Bernoulli's Principle |
|
|
who asserted "Hydrodynamica” that as a fluid moves faster, it produces less pressure, and conversely, slower moving fluids produce greater pressure |
Danielle Bernoulli |
