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प्रश्न
Assertion: The accelerated motion of an object may be due to change in magnitude of velocity or direction or both of them.
Reason: Acceleration can be produced only by change in magnitude of the velocity. It does not depend the direction.
विकल्प
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If assertion is false but reason is true.
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उत्तर
If assertion is true but reason is false.
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संबंधित प्रश्न
What is meant by the term retardation? Name its S.I. unit.
The unit of retardation is ____________
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 .
From the diagram given below, calculate acceleration.
State if the following situation is possible:
A body moving with constant acceleration but with Zero velocity.
Is it possible for an accelerating body to have constant speed?
A bus can accelerate with an acceleration of 1 m/s2 . Find the minimum time for the bus to attain the speed of 100 km/s from 50 km /s.
What do you understand about negative acceleration?
A boy throws a ball up and catches it when the ball falls back. In which part of the motion the ball is accelerating?
Assertion: Position-time graph of a stationary object is a straight line parallel to the time axis.
Reason: For a stationary object, the position does not change with time.
