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प्रश्न
Figure shows the distance-time graph of three students A, B and C. On the basis of the graph, answer the following :
When B meets A, where is C?
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उत्तर
C is at 8 km when B meets A.
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संबंधित प्रश्न
Show by means of graphical method that: v = u + at, where the symbols have their usual meanings.
What type of motion is represented by the following graph ?
Draw velocity – time graph for the following situation:
When a body, is moving with uniform velocity.
Draw velocity – time graph for the following situation:
When a body is moving with variable velocity, but uniform acceleration.
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.
The graph of one quantity versus another result in a straight line. How are the quantities related to each other?
Draw the following graph:
Speed versus time for a fluctuating speed.
What can you say about the nature of motion of a body of its displacement-time graph is:
A straight line inclined to the time axis with an acute angle?
(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.
The area under the v-t graph represents a physical quantity that has the unit.
