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प्रश्न
Explain the following concept in your own words with everyday examples:
Acceleration
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उत्तर
The rate of change of velocity is known as acceleration. It is a vector quantity.
For example, if a car is moving on a straight with variable speed, it will possess some acceleration. In case the speed of the car remains the same but the direction of the car changes, then also the car would be accelerating.
संबंधित प्रश्न
What is meant by the term retardation? Name its S.I. unit.
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?
If a body is moving with a constant velocity its acceleration is ______.
A motor bike running at 90 kmh−1 is slowed down to 18 kmh−1 in 2.5 s. Calculate
- acceleration
- distance covered during slow down.
A body falls towards the earth. Does it have positive or negative 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.
Interpret the following graph:
A car is moving with a speed of 50 km/h. One second later, its speed is 55 km/h. What is its acceleration?
What is meant by negative acceleration?
