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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
Give one example of the following motion:
Uniform retardation
The unit of retardation is ____________
A toy car initially moving with uniform velocity of 18 km h-1 comes to a stop in 2 s. Find the retardation of the car in S.I. units.
A body falls freely from a certain height. Show graphically the relation between the distance fallen and square of time. How will you determine g from this graph?
Figure given below shows a velocity-time graph for a car starting from rest. The graph has three parts AB, BC and CD.

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(b) Compare the magnitude of acceleration and retardation .
When is the acceleration due to gravity positive?
From the velocity – time graph given below, calculate deceleration in region BC.

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 P.

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- acceleration
- time in which it picks up above velocity.
The acceleration of a body is 8.5 ms-2. What does this statement mean?
Write the SI unit of acceleration and retardation.
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A car starts from rest and it is travelling with a velocity of 20 m/s in 10 s. What is its acceleration?
State whether true or false. If false, correct the statement.
Acceleration can get negative value also.
The speed of a particle is constant. Will it have acceleration? Justify with an example.
A quantity has a value of 16ms-2. It is the ______.
A car is being driven at a speed of 20ms-1 when brakes are applied to bring it to rest in 5 s. The deceleration produced in this case will be ______.
When a body is said to be in
- uniform acceleration
- non–uniform acceleration?
