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प्रश्न
Fill in the following blank with suitable word :
Velocity is the rate of change of……………………… It is measured in.............. .
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उत्तर
Velocity is the rate of change of displacement, It is measured in m/s .
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संबंधित प्रश्न
When will you say a body is at non-uniform acceleration?
What term is used to denote the change of velocity with time ?
What is meant by the term acceleration ? State the SI unit of acceleration.
A bus increases its speed from 36 km/h to 72 km/h in 10 seconds. Its acceleration is :
The slope of a speed-time graph gives:
What do you understand by the term acceleration?
When is the negative acceleration?
Can you suggest a real-life example about the motion of a body from the following velocity – time graph?

The velocity-time graph (Fig. 8.5) shows the motion of a cyclist. Find (i) its acceleration (ii) its velocity and (iii) the distance covered by the cyclist in 15 seconds.

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?
