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प्रश्न
The velocity-time graph for part of a train journey is a horizontal straight line. What does this tell you about the trains velocity.
उत्तर
The train has a uniform velocity. This is because neither speed nor the direction of moving object is changing.
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संबंधित प्रश्न
What can you say about the motion of a body if:
its displacement-time graph is a straight line ?
Define speed. What is its S.I. unit?
What does the slope of velocity-time graph represent?
Draw a velocity-time graph for the free fall of a body under gravity starting from rest. Take g = 10m s-2
Draw the speed-time graph of a body when its initial speed is not zero and the speed increases uniformly with time.
What can you conclude if the speed-time graph of a body is a curve moving upwards starting from the origin?
Draw the following graph:
Distance versus time for a body at rest.
Draw the following graph:
Speed versus time for a fluctuating speed.
Draw the following graph:
Speed versus time for a uniformly retarded motion.
(i) In speed time graph uniform motion is given by a straight line parallel to x axis so figure (a) denotes the uniform motion.
(ii) In speed time graph motion with increasing speed is shown by straight line with positive slope so figure (c) denotes the motion with speed increasing.
(iii) In speed time graph motion with decreasing speed is shown by straight line with negative slope so figure (b) denotes the motion with speed decreasing.
(iv) In speed time graph motion with oscillating speed is shown by zigzag line so figure {d) denotes the motion with speed oscillating.
