| Question |
 |
|
| Answer |
|
|
| speed equation |
distance divided by time |
| speed |
the rate at which an object moves |
| motion |
a change in postion in a certain amount of time |
| average speed |
speed that changes over time |
| constant speed |
speed that does not change over time |
| velocity |
speed in a given direction |
| acceleration |
rate of change in velocity |
| deceleration |
a decrease in velocity |
| momentum |
depends on the mass of the object and the velocity with which it is traveling |
| acceleration equation |
(final velocity-orginal velocity)divided by time |
| momentum |
mass x velocity |
| average speed |
final distance divided by final time |
| Types of Friction |
Rolling, Fluid, Sliding |
| Rolling Friction |
Produced by such objects such as wheels or ball bearings. Tends to be less than sliding friction. |
| Sliding Friction |
When solid objects slide over each other |
| Balanced Force |
force acting on an object that will NOT change the object's motion |
| Unbalanced Force |
force that acts on an object that will change its direction |
| Force |
A force gives energy to an object, sometimes causing it to start moving, stop mofing or change direction. A push or a pull |
| Friction |
A force that acts in a direction opposite to the motion of the moving object. Friction will cause a moving object to slow down or stop. |
| Fluid Friction |
Occurs when objects move accross or through fluids or gases |
| Sir Isaac Newton |
Laws of motion |
| 1st law |
Inertia - an object a rest remains at rest and an object in motion remains in motion unless acted upon by an unbalanced force. |
| 2nd Law |
Force = mass x acceleration (the larger the force the larger the acceleration) |
| 3rd Law |
Every action has an equal and opposite reaction. |
Science Vocab 147928
