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प्रश्न
Saphira moves at a constant speed in the same direction. Rephrase the same sentence in fewer words using concepts related to motion.
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उत्तर
She moves in a straight line with constant velocity.
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संबंधित प्रश्न
What can you say about the motion of a body if its speed-time graph is a straight line parallel to the time axis ?
What conclusion can you draw about the acceleration of a body from the speed-time graph shown below .
Show by means of graphical method that: v = u + at, where the symbols have their usual meanings.
Study the speed-time graph of a car given alongside and answer the following questions:
(i) What type of motion is represented by OA ?
(ii) What type of motion is represented by AB ?
(iii) What type of motion is represented by BC ?
(iv) What is the acceleration of car from O to A ?
(v)What is the acceleration of car from A to B ?
(vi) What is the retardation of car from B to C ?
What does the slope of velocity-time graph represent?
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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.
Draw the following graph:
Speed versus time for a fluctuating speed.
State whether true or false. If false, correct the statement.
If the velocity – time graph of a particle is a straight line inclined to X-axis then its displacement – time graph will be a straight line.
The area of the velocity-time graph gives the displacement of the body.
