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For a body starting from rest, the displacement in 10 seconds, when it acquires 4 ms-1 in 2 seconds is______.
On a velocity-time graph, a horizontal straight line corresponds to motion at_______.
DIRECTION: In the following questions, a statement of assertion (A) is followed by a statement of reason (R).
Assertion: The speedometer of an automobile measures the average time taken to travel a distance by an automobile.
Reason: Average velocity is equal to total displacement per total time taken.
Assertion: Acceleration of a moving body is always positive.
Reason: Acceleration of a moving body is the rate of change of velocity
Assertion: The displacement of a body may be zero when distance travelled by it is not zero.
Reason: The displacement is the longer distance between the initial and final positions.
Assertion (A): An object moving with uniform acceleration follows a parabolic trajectory on a velocity-time graph.
Reason (R): The distance-time graph for uniform acceleration is a straight line, indicating constant acceleration.