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तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ७

Correct your friend who says that acceleration gives the idea of how fast the position changes. - Science

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प्रश्न

Correct your friend who says that acceleration gives the idea of how fast the position changes.

टीपा लिहा
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उत्तर

There are two possible answers:

Velocity gives an idea of how fast the position changes, or Acceleration gives an idea of how fast the velocity changes.

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पाठ 2: Force and Motion - Evaluation [पृष्ठ २६]

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सामाचीर कलवी Science - Term 1 [English] Class 7 TN Board
पाठ 2 Force and Motion
Evaluation | Q V. 3. | पृष्ठ २६

संबंधित प्रश्‍न

Give a scientific reason.

When an object falls freely to the ground, its acceleration is uniform.


Define acceleration. State its unit.


What is meant by the term retardation? Name its S.I. unit.


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


A vehicle is accelerating on a straight road. Its velocity at any instant is 30 km/h. After 2 s, it is 33.6 km/h, and after further 2 s, it is 37.2 km/h. Find the acceleration of the vehicle in m s-2. Is the acceleration uniform?


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


When is the acceleration due to gravity negative?


The change in velocity of a motorbike is 54 kmh−1 in one minute. Calculate its acceleration in (a) ms−2 (b) kmh−2.


Draw velocity – time graph for the following situation:

When a body is moving with variable velocity and variable acceleration.


From the diagram given below, calculate deceleration.


What does a negative acceleration mean?

A car traveling at 60 km/h, stops on applying brakes in 10 seconds. What is its acceleration?


Out of energy and acceleration, which one is a vector?


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


A car accelerates to a velocity of 30 m/s in 10 s and then decelerates for 20 s so that it stops. Draw a velocity-time graph to represent the motion and find:
The Deceleration.


If a body starts from rest, what can be said about the acceleration of the body?


The value of acceleration for a body at rest is ______.


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