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forces and motion
Question | Answer |
---|---|
gravity | an invisible force that pulls objects toward each other. |
mass | quantitative measure of inertia, a fundamental property of all matter |
weight | the force acting on an object due to gravity |
pull | A force that changes the direction of an object towards you |
push | a force that causes an object to move away from the person who is applying the force from its state of rest |
Friction | the force that causes a moving object to slow down when it is touching another object. |
Motion | the action or process of moving or of changing place or position; movement. |
Inertia | the property of matter by which it retains its state of rest or its velocity along a straight line so long as it is not acted upon by an external force. |
Speed | the rate at which someone or something moves or travels. |
Position | the place where someone or something is in relation to other people or things. |
Axis | the imaginary straight line that something (such as the Earth) turns around. |
Unbalanced Force | are not equal, and they always cause the motion of an object to change the speed and/or direction that it is moving. |
Acceleration | the rate at which the speed of a moving object changes over time |
Direction | a course along which someone or something moves Velocity |
Air resistance | Air resistance is the force acting on an object that is moving through air flowing in the opposite direction. |
Momentum | the quantity of motion of a moving body, measured as a product of its mass and velocity. |
Resist | withstand the action or effect of. |
Deceleration | reduction in speed or rate. |
Newton’s First Law | every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. |
Newton’s Second Law | Newton's second law states that the acceleration of an object is directly related to the net force and inversely related to its mass. Acceleration of an object depends on two things, force and mass. |
Newton’s Third Law | for every action there is an equal and opposite reaction |