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Share/AssignPre-Requisires Test & Enrich Rest And Motion | Speed Notes Notes For Quick Recap Rest And Motion Study Tools Audio, Visual & Digital Content Distance and Displacement Difference Between Displacement and Displacement Distance Displacement Distance is defined as the total length of the path travelled by an object to go from one point to another.…
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Share/AssignPre-Requisires Test & Enrich Rest And Motion | Speed Notes Notes For Quick Recap Rest And Motion Study Tools Audio, Visual & Digital Content Distance and Displacement Difference Between Displacement and Displacement Distance Displacement Distance is defined as the total length of the path travelled by an object to go from one point to another.…
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Distance | Displacement |
Distance is defined as the total length of the path travelled by an object to go from one point to another. | Displacement is defined as the length of the line segment that joins the initial and final positions of an object. |
Since distance has only magnitude and its direction cannot be specified always, it is a scalar quantity. | Since displacement has magnitude and it is specified in a direction from initial position to final position, it is a vector quantity. |
Distance can only have positive values. | Displacement can have both positive and negative values. |
Distance depends on the length of the path travelled. | Displacement depends only on the initial and final point regardless of the path travelled. |
SPEED | VELOCITY |
It is defined as the rate of change of distance. | It is defined as the rate of change of net displacement. |
It is a scalar quantity. | It is a vector quantity. |
It can never be negative or zero. | It can be negative,zero or positive. |
Speed is velocity without direction. | Velocity is directed speed. |
Speed may or may not be equal to velocity. | A body may possess different velocities but the same speed. |
Speed never decreases with time. For a moving body, | Velocity can decrease with time. For a moving body , it can be zero. |
Speed is never zero. | Velocity can be zero. |
Speed in SI is measured in ms-1 | Velocity in SI, is measured in ms-1 |
Equations of motion can be derived by two methods. They are (i) Graphical Method. (ii) Algebraic Method
Derivation of v2 – u2 = 2as
Conclusions From a Distance – Time Graph
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