click below
click below
Normal Size Small Size show me how
ch11 science
Question | Answer |
---|---|
Frame of reference | is a system of objects that are not moving with respect to one another. |
Relative motion | is movement in relation to a frame of reference |
Distance | is the lenght of a path btwn two points |
Vector | is a quantity that has magnitude and direction |
Resultant vector | Is the vector sum of two or more vectors |
Speed | is the ratio of the distance an object moves to the amount of time the objects moves |
Average speed | is the total distance traveled diveded by the time |
Instanteneous speed | is the rate at which an object is moving at a given moment in time |
Accelaration | is the changes in speed changes in direction or changes in both, acceleration is a vector |
Free fall | the movement of an object toward earth solely because of gravity |
Constant accelaration | is a steady change in velocity |
Linear graph | in which the displayed data from straight line parts, the slope of a line is acceleration |
Nonlinear graph | a curve connects the data points that are plotted |