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vehicles set 1
Question | Answer |
---|---|
coast | To move without being continuously pushed or pulled |
chassis | The frame and wheels of a vehicle |
axles | Round shafts that connect the opposing wheels of a car. |
bearings | Structures trhat help parts move freely. |
motion | A change in the position of an object over time. |
speed | A measure of how fast an object is traveling |
force | A push or pull. |
propulsion force | A push or pull that causes an object to move. |
gravity | The force of a attraction between two objects |
reference point | An object or location with which position of a second object is compared over time to determine if the second object is moving |
veer | A change of direction or course |
baseline | a specific value that can serve as a basis for comparison |
iteration | a repetition that attempts to improve on a process or product |
iterate | to perform repetitions to improve on a process or product |
acceleration | A change over time in the speed, the direction, or the speed and direction of motion |
friction | A force that opposes motion |
system | A set of parts so related or interconnected that they work as a whole |
subsystem | a system within a system that has its own function |
lubrication | a substance between two surfaces to reduce friction |
fair test | a test in which only one factor (variable) is changed and all the other conditions are kept the same |
scale | the ration of the measurements in a representation or a model of an object to the actual object |
velocity | An objects speed and direction |
elapsed time | The time it takes to travel between a starting point and an ending point |
magnitude | greatness or extent of size |
net force | the overall force on an object, when all the individual forces acting one eachother are added together |
balanced force | forces opposite in direction and equal in magnitude;balanced forces have a net force of zero |
unbalanced force | forces that do not produce a net force of zero |
normal force | the force that comes from the surface on which an object is locaed |
frame of reference | the view from which you judge the motion of another object |
qualitative data | information describing the qualities of objects obsrved, but not measured |
quantitative data | information based on measurement or counting |
design engineer | someone who designs things |
criteria | goals that must be satisfied to be able to succesfully achieve a challenge |
Which variable is plotted on the "x" axis? | the time |
Which variable is plotted on the "y" axis? | the distance |
what is a design change? | the way the car is made/put together (changing the wheels) |
What is a construction change? | how a car is assembled (making one axel longer than other) |
what is postive/negative acceleration? | Postive: speeding up Negative: slowing down |
What are the basic components of a coaster car? | bearings, axels, chassis |
What are some metric unit of measurements? | centimeters meters kilometers |