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What is kinematics?...

What is kinematics?

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Kinematics. means pure description of motion in which we neglect the causes of motion.
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Distance is a scalar quantity. Displacement is a vector quqntity. The magnitude of displacement is always less than or equal to distance. For a moving body displacement can be zero but distance cannot be zero. Same concept is applicable regarding velocity and speed. Acceleration is the rate of change of velocity. If acceleration is constant, then equations of kinematics are applicable for one dimensional motion under the gravity in which air resistance is considered, then the value of acceleration depends on the density of medium. Each motion is measured with respect of frame of reference. Relative velocity may be greater // smaller to the individual velocities. A person is going 30 m north, 20m east and then 30sqrt(2) m southwest. The net displacement will be

Distance is a scalar quantity. Displacement is a vector quqntity. The magnitude of displacement is always less than or equal to distance. For a moving body displacement can be zero but distance cannot be zero. Same concept is applicable regarding velocity and speed. Acceleration is the rate of change of velocity. If acceleration is constant, then equations of kinematics are applicable for one dimensional motion under the gravity in which air resistance is considered, then the value of acceleration depends on the density of medium. Each motion is measured with respect of frame of reference. Relative velocity may be greater // smaller to the individual velocities. A particle moves from A to B. Then the ratio of distance to displacement is :-

Distance is a scalar quantity. Displacement is a vector quqntity. The magnitude of displacement is always less than or equal to distance. For a moving body displacement can be zero but distance cannot be zero. Same concept is applicable regarding velocity and speed. Acceleration is the rate of change of velocity. If acceleration is constant, then equations of kinematics are applicable for one dimensional motion under the gravity in which air resistance is considered, then the value of acceleration depends on the density of medium. Each motion is measured with respect of frame of reference. Relative velocity may be greater // smaller to the individual velocities. A particle is moving along the path y=4x^(2) . The distance and displacement from x=1 to x=2 is (nearly) :-

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KUMAR PRAKASHAN-MOTION IN A STRAIGHT LINE -SECTION-C
  1. When an object is said to be in motion ?

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  2. How motion of any particle is described ?

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  3. What is kinematics?

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  4. In which condition two substance can be considered as a particles ?

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  5. "Different types of speed's average is called average speed". Is this ...

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  6. If direction of velocity and acceleration are in mutually opposite dir...

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  7. When an average velocity of a particle becomes its instantaneous veloc...

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  8. For the given vehicle, its stopping distance is proportional to .........

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  9. Two cars moving with speeds 40 km/hr and 80 km/hr respectively with un...

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  10. When the average acceleration of the particle becomes instantaneous ac...

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  11. Give relation between displacement and path length ?

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  12. What would be the distance covered by the particle falling freely in 1...

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  13. Is it possible for any moving object that velocity is constant but spe...

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  14. "Zero speed and non-zero velocity". Is this statement true or false ? ...

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  15. Speed of moving object can never be negative. Why ?

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  16. "Slope of x tot graph may be negative". Is this true or false ?

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  17. Does displacement depend on the selection of origin of cartasian coord...

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  18. In which situation, distance and magnitude of displacement are same?

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  19. Is it possible for any moving object that speed is constant but veloci...

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  20. Uniform acceleration means constant slope of x tot graph. Is it is tr...

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