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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
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 .
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?
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.
Distinguish between uniformly and non-uniformly accelerated motions.
Is it possible for an accelerating body to have constant speed?
A car starts from rest and it is travelling with a velocity of 20 m/s in 10 s. What is its acceleration?
The Unit of acceleration is ______.
It is possible to have objects moving with uniform speed but variable acceleration.
Assertion: A negative acceleration of a body can be associated with speeding up of the body.
Reason: Increase in the speed of a moving body is independent of its direction of motion.
