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प्रश्न
What do you mean by constant acceleration?
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उत्तर
A body is said to have constant acceleration, if it travels is a straight line and its velocity increases or decreases by equal magnitude in equal intervals of time.
Ex: the motion of a freely falling body.
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संबंधित प्रश्न
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State the type of motion represented by the following sketches in Figures.

Give an example of each type of motion.
A bullet initially moving with a velocity 20 m/s strikes a target and comes to rest after penetrating a distance 10 cm into the target. Calculate the retardation caused by the target.
A train moving with a velocity of 20 ms−1 is brought to rest by applying brakes in 5 s. Calculate the retardation.
If a body is moving with a constant velocity its acceleration is ______.
A ball is rolling from A to D on a flat and smooth surface. Its speed is 2 cm/s. On reaching B, it was pushed continuously up to C. On reaching D from C, its speed had become 4 cm/s. It took 2 seconds for it to go from B to C. What is the acceleration of the ball as it goes from B to C?

When is the acceleration due to gravity negative?
A racing car is moving with a velocity of 50 m/s. On
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A motor bike running at 90 kmh−1 is slowed down to 18 kmh−1 in 2.5 s. Calculate
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- distance covered during slow down.
Interpret the following graph:
A body has an acceleration of -3.5 ms-2. What is its retardation?
A car accelerates uniformly from a velocity of 18 km/h to 36 km/h in 15 min. What is its acceleration?
The rate of change of velocity is ______.
When a body starts from rest, the acceleration of the body after 2 seconds in ______ of its displacement.
The acceleration of the body that moves with a uniform velocity will be ______.
It is possible to have objects moving with uniform speed but variable acceleration.
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Reason: Acceleration is a vector.
Assertion: Position-time graph of a stationary object is a straight line parallel to the time axis.
Reason: For a stationary object, the position does not change with time.
When a body is said to be in
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