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PS Vocab #3 Q1
PS Vocabulary #3 Q1 Ch2 Sec. 3 and Ch3 Sec. 1
Term | Definition |
---|---|
acceleration | The rate of change of velocity. |
centripetal acceleration | Acceleration toward the center of a curved or circular path |
force | A push or a pull. Catching a basketball and hitting a baseball with a bat are examples of this. |
net force | The sum of all of the forces acting on an object. |
friction | the force that opposes the sliding motion of two surfaces that are touching each other. |
static friction | Prevents two surfaces from sliding past each other and is due to the microwelds that have formed between the bottom of the box and the floor. |
sliding friction | Opposes the motion of two surfaces sliding past each other and is caused by microwelds constantly breaking and forming as the objects slide past each other. |
rolling friction | As a wheel rolls, static friction acts over the area where the wheel and surface are in contact. It is the resistance to motion by bodies that are in rolling contact |