Reading...
Play button
Play button
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;
4 Cards in this Set
- Front
- Back
|
Force
F |
An influence that changes the state of motion of an object. For example, we exert a force to open a door—to start the door swinging open; and we exert force on a ball when he hit it with a bat. Mass x acceleration = force or ma = F . The expression tells us that a stronger force is required to accelerate a heavy object by a given amount than to accelerate a lighter object by the same amount.
|
|
|
Acceleration
a |
The rate of change of velocity (either its direction or its magnitude). The acceleration (a) of an object,the rate of change of its velocity,is
proportional to the force it experiences. |
|
|
Velocity
|
The rate of change of position, has both magnitude and direction; so, when a force acts, it can change the magnitude alone, the direction alone, or both simultaneously.
|
|
|
Speed
|
The magnitude of the velocity of an
object--- the rate of change of position regardless of the direction of the motion. |
