9.3 In which time interval speed of the train is constant (a) O to 4s (b) 4s to 10s (c)10s to 16s (d) O to 163
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4 Motion in Two Dimensions 78. 4.1 The Position, Velocity, and Acceleration Vectors 78. 4.2 Two-Dimensional Motion with Constant Acceleration 81.
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>>Figure gives a speed - time...
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Figure gives a speed-time graph of a particle in motion along a constant direction. Three equal intervals of time are shown. In which interval is the average acceleration greatest in magnitude ? In which interval is the average speed greatest ? Choosing the positive direction as the constant direction of motion, give the signs of v and a in the three intervals. What are the accelerations at the points A, B, C and D
The slope of the speed-time graph of the particle gives information about the acceleration of the particle. The magnitude of the average acceleration of the particle depends upon the slope of the graph in the particular interval.
⇒The slope of the graph in the interval 2 is maximum and is in a negative direction. Therefore, it has the maximum magnitude of the average acceleration.