| Question |
Answer |
| define MOTION |
The change of an object's position or orientation with time |
| define TRAJECTORY |
the path along which an object moves, which might be a straight line or might be curved |
| define MOTION DIAGRAM |
a composit image showing an object's position at several equally spaced instants of time |
| define PARTICLE |
an object that can be represented as a mass at a single point in space |
| define MODEL |
a simplificaation of reality |
| define PARTICLE MODEL |
a simplification in which we treat a moving object as if all of is mass were concentrated at a single point |
| define ONE-DIMENSIONAL (1-D) |
an object that can only move along a straight line. |
| define POSITION |
location of an object at a particular instance in time |
| define ORIGIN |
a fixed reference point from which all distances are to be measured |
| define COORDINATE SYSTEM |
an origin, and an axis marked in both the positive and negative directions |
| define COORDINATE |
the symbol that represents a position along an axis |
| define DISPLACEMENT |
a change of position |
| define TIME INTERVALS |
changes in time |
| define UNIFORM MOTION |
objects moving along a straight line at a constant speed |
| define VELOCITY |
the displacement of an object in a given time interval v=Δx/Δt |
| define SIGNIFICANT FIGURES |
a digit that is reliably known |
| SI units for time |
second (s) |
| SI units for length |
meter (m) |
| SI units for mass |
kilogram (kg) |
| Common prefixes M |
mega power of 10 6 |
| Common prefixes k |
kilo power of 10 3 |
| Common prefixes c |
centi power of 10 -2 |
| Common prefixes m |
mili power of 10 -3 |
| Common prefixes μ |
micro power of 10 -6 |
| Common prefixes n |
nano power of 10 -9 |
| 1 in = ?cm |
2.54 cm |
| 1 ft = ?m |
0.305 m |
| 1 mi = ? km |
1.609 km |
| 1 mph = ? m/s |
0.447 m/s |
| 1 m = ?in |
39.37 in |
| 1 km = ? mi |
0.621 mi |
| 1 m/s = ?mph |
2.24 mph |
| define CONVERSION FACTOR |
a ratio of values equal to 1 |
| define ORDER OF MAGNITUDE ESTIMATE |
a one-signficant-figure estimate or calculation such as estimate of speed indicated by ~ |
| define SCALAR QUANTITY |
a physical quantity is described by a single number with a unit - can be positive negative or zero |
| define VECTOR QUANTITY |
a quantity that has both a size (how far? how fast?) and a direction (which way?) Graphically represent a vector as an arrow over symbols |
| define MAGNITUDE |
the size or length of a vector |
| define DISPLACEMENT VECTOR |
displacement quantity having both magnitude and direction and can be represnted by a vector |
| define VELOCITY VECTOR |
points the direction of the objects motion and whole magnitude is the object's speed |
Cardio Block2anatomy
