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तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ७

The rate of change of velocity is ______. - Science

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प्रश्न

The rate of change of velocity is ______.

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उत्तर

The rate of change of velocity is acceleration.

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अध्याय 2: Force and Motion - Evaluation [पृष्ठ २५]

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सामाचीर कलवी Science - Term 1 [English] Class 7 TN Board
अध्याय 2 Force and Motion
Evaluation | Q II. 2. | पृष्ठ २५

संबंधित प्रश्न

Figure given below shows a velocity-time graph for a car starting from rest. The graph has three parts AB, BC and CD.

(a) Is the magnitude of acceleration higher or lower than that of retardation ? Give a reason .
(b) Compare the magnitude of acceleration and retardation .


When is the acceleration due to gravity negative?


Give an example of an accelerated body, moving with a uniform speed.


From the diagram given below, calculate deceleration.


A cyclist driving at 5 ms−1, picks a velocity of 10 ms−1, over a distance of 50 m. Calculate

  1. acceleration
  2. time in which the cyclist picks up above velocity.

A motor bike running at 5 ms−1, picks up a velocity of 30 ms−1 in 5s. Calculate

  1. acceleration
  2. distance covered during acceleration.

A motor bike running at 90 kmh−1 is slowed down to 18 kmh−1 in 2.5 s. Calculate

  1. acceleration
  2. distance covered during slow down.

Define acceleration.


What does a positive acceleration mean?


What does a negative acceleration mean?

The distance covered by a body is directly proportional to the square of the time elapsed. What can you say about its acceleration?


State if the following situation is possible:
A body moving with constant acceleration but with Zero velocity.


State if the following situation is possible:
A body moving horizontally with an acceleration in vertical direction.


Is it possible for an accelerating body to have constant speed?


Convert the following acceleration:
7200 km/h2 into m/s2


Figure represents graphically the velocity of a car moving along a straight road over a period of 100 hours.

Calculate the acceleration along AB and the retardation along BC.


The slope of a velocity-time graph gives ______.


A quantity has a value of 16ms-2. It is the ______.


It is possible to have objects moving with uniform speed but variable acceleration.


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