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प्रश्न
Can you suggest a real-life example about the motion of a body from the following velocity – time graph?
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उत्तर
A ball is thrown vertically upward and it returns back to earth after some time. In this situation, the graph will the same as that shown in the figure.
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संबंधित प्रश्न
When will you say a body is at non-uniform acceleration?
Which of the two can be zero under certain conditions : average speed of a moving body or average velocity of a moving body ?
What term is used to denote the change of velocity with time ?
What conclusion can you draw about the velocity of a body from the displacement-time graph shown below :
Name the quantity which is measured by the area occupied under the velocity-time graph.
Write three equations of uniformly accelerated motion relating the initial velocity (u), final velocity (v), time (t), acceleration (a) and displacement (S).
Derive the following equations for uniformly accelerated motion:
(i) v = u + at
(ii) `"S = ut" + 1/2 "at"^2`
(iii) v2 = u2 + 2aS
where the symbols have their usual meanings.
When is the positive acceleration?
Can you suggest a real-life example about the motion of a body from the following velocity – time graph?
An electron moving with a velocity of 5 × 104 ms−1 enters into a uniform electric field and acquires a uniform acceleration of 104 ms–2 in the direction of its initial motion.
(i) Calculate the time in which the electron would acquire a velocity double of its initial velocity.
(ii) How much distance the electron would cover at this time?
