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प्रश्न
Diagram shows a velocity – time graph for a car starting from rest. The graph has three sections AB, BC, and CD.
Is the magnitude of acceleration higher or lower than that of retardation? Give a reason.
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उत्तर
Acceleration = slope of AB = `"Bt"/"At"="v"_0/"t"` ......(i)
Retardation = slope of CD = `"v"_0/(1/2"t")=2 "v"_0/"t"` ..........(ii)
∵ Magnitude of retardation is twice the magnitude of acceleration.
∴ Magnitude of acceleration is lower.
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संबंधित प्रश्न
Fill in the following blank with suitable word :
In a speed-time graph, the area enclosed by the speed-time curve and the time axis gives the…………….. by the body.
Study the speed-time graph of a car given alongside and answer the following questions:
(i) What type of motion is represented by OA ?
(ii) What type of motion is represented by AB ?
(iii) What type of motion is represented by BC ?
(iv) What is the acceleration of car from O to A ?
(v)What is the acceleration of car from A to B ?
(vi) What is the retardation of car from B to C ?
What does the area of an acceleration – time graph represent?
Diagram shows a velocity – time graph for a car starting from rest. The graph has three sections AB, BC and CD.
From a study of this graph, state how the distance travelled in any section is determined.
Name the physical quantity which is equal to the area under speed-time graph.
Interpret the following graph:
What can you say about the nature of motion of a body of its displacement-time graph is:
A straight line parallel to line axis?
What can you say about the motion of a body if:
Its time-velocity graph is a straight line
Interpret the following graph:
The given graph shows the variation of velocity (v) with position (x) for a particle moving along a straight line
Which of the following graph shows the variation of acceleration (a) with position (x)?
