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प्रश्न
Negative acceleration is called ______.
उत्तर
Negative acceleration is called retardation (or) deceleration.
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संबंधित प्रश्न
An object of mass 16 kg is moving with an acceleration of 3 m/s2. Calculate the applied force. If the same force is applied to an object of mass 24 kg, how much will be the acceleration?
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 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.
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What do you understand about negative acceleration?
The speed of a particle is constant. Will it have acceleration? Justify with an example.
A quantity has a value of 16ms-2. It is the ______.
Assertion: A positive acceleration of a body can be associated with the slowing down of the body.
Reason: Acceleration is a vector.
