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प्रश्न
Give one example of the following motion:
Uniform retardation
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उत्तर
Uniform retardation - Motion of a vehicle, reaching a destination.
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संबंधित प्रश्न
Define acceleration. State its unit.
Define the term acceleration due to gravity. State its average value.
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 .
An aeroplane lands at 216 kmh−1 and stops after covering a runway of 2 m. Calculate the acceleration and the time, in which it comes to rest.
A racing car, initially at rest, picks up a velocity of 180 kmh−1 in 4.5 s. Calculate
- acceleration
- distance covered by the car.
What does a positive acceleration mean?
State if the following situation is possible:
A body moving horizontally with an acceleration in vertical direction.
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.
A car starts from rest and it is travelling with a velocity of 20 m/s in 10 s. What is its acceleration?
What is the difference between uniform acceleration and non–uniform acceleration?
