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प्रश्न
What can you say about the motion of a body if:
Its time-velocity graph is a straight line
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उत्तर
In velocity-time graph a straight line shows body is moving with uniform constant velocity if it is parallel to x axis and shows body is moving constant acceleration of it is inclined to x axis.
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संबंधित प्रश्न
A train starting from rest picks up a speed of 20 ms−1 in 200 s. It continues to move at the same rate for the next 500 s and is then brought to rest in another 100 s.
- Plot a speed-time graph.
- From graph calculate
(a) uniform rate of acceleration
(b) uniform rate of retardation
(c) total distance covered before stopping
(d) average speed.
From the velocity – time graph given below, calculate Distance covered in the region ABCE.
Diagram is given below shows velocity – time graph of car P and Q, starting from the same place and in the same direction. Calculate which car is ahead after 10 s and by how much?
The area of the right triangle under a speed-time graph is 500 m, in a time interval of 20 s. What is the speed of the body? Is the motion uniform or non-uniform?
Draw the speed-time graph of a body when its initial speed is not zero and the speed increases uniformly with time.
Derive the equation
S = ut+ `1/2` at2
Using a speed- time graph
Figure shows the distance-time graph of three students A, B and C. On the basis of the graph, answer the following :
Will the three ever meet at any point on the road?
(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.
Which of the following can determine the acceleration of a moving object.
The area of the velocity-time graph gives the displacement of the body.
