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| The branch of science with the ultimate laws that govern the structure of the universe and the forms of matter and enegy and their interaction. |
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| The branch of physiscs that deals with the motion of objects and the forces that change it |
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| A branch of mechanics which describes the motion of an object without ecplicit reference to the forces that act upon an object. |
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| A quantity that can be used to describe a physical process or/and physical phenomenon. |
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| Can be described by a magnitutde ( number and unit ) |
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| can be described by a magnituide and a direction |
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| Rectangular components of a vector |
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| Two perpendicular vectors whose vector sum is equal to the original vector. |
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| International system of Units |
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Definition
base units are a meter= length,
kilogram = mass,
second = time,
mole = amount ofmatter,
kelvin = temp.
ampere = electric current
candela = luminous intensity. |
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| an object with a coordinate system that can be used to define and describe motion. |
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| change in position of an object with respect to the frame of reference. |
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| a vector representing the change in position of an object, drawn from the intial to the final position of an object. |
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| the length of a path along an object |
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| difference in time between two clock readings |
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Velocity - the rate of motion in a given direction of the rate of displacement
Speed- the rate of motion / rate of distance |
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| the rate of a displacement at a particular moment of time and a particular point of a path of motion. |
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| Average velocity and average speed |
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Definition
Average velocity is a vector physical quantity that is equal the ration of a displacement over a timeinterval.
Average speed is a scalar physical quantuty that is equal to the ration of a distance over a time interval. |
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Path of motion = is the line along which an object participates in motion.
Trajectory = path followed by a projectile |
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| an idealized motin in gravitational field when air resistance is neglected an acceleration due to gravity is nearly constatnt |
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| a motion of an object whose path of motion is a straight line. |
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| two dimensional motion of an object in gravitational field when along one dimensiton there is a uniform linear motion and along the second dimension there is a uniformlu accelerated linear motion. |
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| a horizontal distance of a projectile |
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