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प्रश्न
Correct your friend who says that acceleration gives the idea of how fast the position changes.
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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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संबंधित प्रश्न
Define acceleration. State its unit.
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 .
Explain the following concept in your own words with everyday examples:
Acceleration
A ball is rolling from A to D on a flat and smooth surface. Its speed is 2 cm/s. On reaching B, it was pushed continuously up to C. On reaching D from C, its speed had become 4 cm/s. It took 2 seconds for it to go from B to C. What is the acceleration of the ball as it goes from B to C?
Draw velocity – time graph for the following situation:
When a body is moving with variable velocity, but uniform retardation.
From the velocity – time graph given below, calculate deceleration in region BC.
A cyclist driving at 36 kmh−1 stops his motion in 2 s, by the application of brakes. Calculate
- retardation
- distance covered during the application of brakes.
Define acceleration.
What is the SI unit of acceleration?
Write the SI unit of retardation.
Can you use the relation [B1]?
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?
The Unit of acceleration is ______.
The acceleration of the body that moves with a uniform velocity will be ______.
What is meant by negative acceleration?
If a moving body comes to rest, then its acceleration is ______.
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 ______.
