NEET Physics Speed & Velocity MCQ Question
Consider a speed-time graph of a particle moving along a straight line in a constant direction. The graph shows three different equal intervals of time. If the graph indicates a decrease in speed over the first interval, a constant speed in the second interval, and an increase in speed in the third interval, which statement correctly describes the acceleration of the particle over these intervals?
Acceleration is negative in the first interval, zero in the second, and positive in the third.
Acceleration is positive in the first interval, zero in the second, and negative in the third.
Acceleration is zero in the first interval, negative in the second, and positive in the third.
Acceleration is positive in the first interval and zero in the second and third intervals.
Correct Answer
Detailed Explanation
The speed-time graph describes acceleration based on changes in speed. A decrease in speed implies negative acceleration, constant speed implies zero acceleration, and an increase in speed implies positive acceleration.
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