Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Normal Size Small Size show me how

# Physics SemesterExam

### semester A examination

Question | Answer |
---|---|

acceleration | the rate at which velocity is changing. (includes direction) |

acceleration equation | a= change in V / change in T |

air resistance | diminishes net forces acting on an object. |

elastic collision | when objects come together and bounce off of each other |

inelastic collistion | when to objects interact and stay attached to each other after the collision. |

component | the projection of a vector quantity, as force or velocity, along an axis. |

constant | |

dependent variable | the part of data that can be changed in an experiment |

direction | the place where an object is going. |

displacement | includes direction the change in position of an object |

the equation for displacement | x final -x intial |

distance | the space between two places or object. |

units for distance | meters (m) |

duration | how long something lasts |

elliptical | referring to an oval shaped curve that is the path of a point that moves such that the sum of its distances from two fixed points is contant |

energy | the property of an object of system that enables to do work |

unit for evergy | Joules (J) |

force | an influence that accelerates an object using a push or a pull, also a vector quantity |

units for force | Newtons (N) |

free fall | motion under the influence of the gravitational force only |

friction | the force that acts to resists the relative motion (or attempted motion) of objects or materials that are in contact |

gravitational field force | a force field that exists in the space around every mass or group of masses. |

horizontally | left to right, right to left |

hypothesis | an educated guess before an experiemt |

impluse | product of force and time interval during which the force acts. |

momentum change equals | impluse * |

independent variable | the part of an equation that cannot change ex:percentages |

initial | first, starting |

investigation | searching for an answer |

joules | the unit for work and all forms of energy |

kilogram | unit of mass (kg) |

kinetic | something in motion |

kinetic energy | energy in motion |

equation for kinetic energy | 1/2mass(speed^2) |

law of conservation of momentum | in the absence of a net force, the momentum of an obeject of system is unchanged. |

magnitude | a measurement without direction(how big,long,ect.) |

mass | a measurement of ones inertia and how much matter an object has. |

momenta | plural of momentum |

momentum | the product of mass and velocity of an object has magnintude and direction (vector quantity) |

net force | the combination of all forces action on an object |

net impulse | |

newtons is used for | unit for force |

normal force | for an object resting on a horizontal surface, the upward force that balances the weight of an object. (aka supporting force) |

potential energy | energy the has the potential to create kenetic energy. ex: rollercoaster at top of hill |

equation for potential energy | mass(gravity)height |

projectile | any object that moves through the air or space, acted only by gravity, can be air resistance |

power | rate at which work is done or energy is transformed. |

equation for power | P= Work/time |

radius | from the center of a circle to the outside |

resistance | going against |

scientific notation | a number times 10 to the power of something (negative= decimal, positive=positive) ex: 2.4 x 10^4 = 24,000 |

static | |

vectors | an arrow whose length represents the magnitude of a quantity and whose direction represents the direction of the quantity |

velocity | speed together with the direction of motion |

vertically | up and down |

volume | space that occupies an object. |

weight | the force on a body due to gravity |

work | the product of the force on an object and the distance through which the object is moved. |

work is measure in Joules | W= Force (distance) |

Y intercept | the place on a graph where x=0 |

newtons 1st law | a force will remain constant unless acted upon an outside force |

newtons second law | F=ma law |

newtons 3rd law | each force has an equal an opposite force |

Created by:
Ylimeli