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प्रश्न
What happens to the stepwise increasing speed-time graph when the size of each step is made very small?
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उत्तर
The graph becomes straight line with positive slope with time axis and represents almost a constant acceleration.
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संबंधित प्रश्न
State the type of motion represented by the following sketches in Figures.

Give an example of each type of motion.
A vehicle is accelerating on a straight road. Its velocity at any instant is 30 km/h. After 2 s, it is 33.6 km/h, and after further 2 s, it is 37.2 km/h. Find the acceleration of the vehicle in m s-2. Is the acceleration uniform?
Draw velocity – time graph for the following situation:
When a body is moving with variable velocity, but uniform retardation.
Draw velocity – time graph for the following situation:
When a body is moving with variable velocity and variable acceleration.
Diagram is given below shows velocity – time graph of car P and Q, starting from the same place and in the same direction. Calculate the Acceleration of car Q between 2 s – 5 s.

A cyclist driving at 36 kmh−1 stops his motion in 2 s, by the application of brakes. Calculate
- retardation
- distance covered during the application of brakes.
The graph shows how the velocity of a scooter varies with time in 50 s.
Work out: Acceleration.
The rate of change of velocity is ______.
The Unit of acceleration is ______.
Assertion: A negative acceleration of a body can be associated with speeding up of the body.
Reason: Increase in the speed of a moving body is independent of its direction of motion.
