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तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता 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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पाठ 2: Force and Motion - Evaluation [पृष्ठ २५]

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

संबंधित प्रश्‍न

Figure shows the velocity-time graphs for two cars A and B moving in the same direction. Which car has greater acceleration? Give reasons to your answer.


The velocity-time graph for a uniformly retarded body is a straight line inclined to the time axis with an obtuse angle. How is retardation calculated from the velocity-time graph?


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

Which part of graph shows motion with uniform
(a) velocity (b) acceleration (c) retardation ?


A train moving with a velocity of 20 ms−1 is brought to rest by applying brakes in 5 s. Calculate the retardation.


If a body is moving with a constant velocity its acceleration is ______.


From the diagram given below, calculate acceleration.


From the velocity – time graph given below, calculate deceleration in region BC.


What does a negative acceleration mean?

Distinguish between uniformly and non-uniformly accelerated motions.


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.


Interpret the following graph:


What happens to the stepwise increasing speed-time graph when the size of each step is made very small?


A car accelerates uniformly from a velocity of 18 km/h to 36 km/h in 15 min. What is its acceleration?


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


A car is moving with a speed of 50 km/h. One second later, its speed is 55 km/h. What is its acceleration?


The graph shows how the velocity of a scooter varies with time in 50 s.
Work out: Acceleration.


When a body starts from rest, the acceleration of the body after 2 seconds in ______ of its displacement.


A boy throws a ball up and catches it when the ball falls back. In which part of the motion the ball is accelerating?


Assertion: When a body is subjected to a uniform acceleration, it is always moving in a straight line.
Reason: Motion may be straight-line motion or circular motion.


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