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प्रश्न
From the given v-t graph it can be inferred that an object is
विकल्प
in uniform motion
at rest
in non - uniform motion
moving with uniform accelerations
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उत्तर
moving with uniform accelerations
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संबंधित प्रश्न
Give a scientific reason.
When an object falls freely to the ground, its acceleration is uniform.
An object of mass 16 kg is moving with an acceleration of 3 m/s2. Calculate the applied force. If the same force is applied to an object of mass 24 kg, how much will be the acceleration?
What is meant by the term retardation? Name its S.I. unit.
Give one example of the following motion:
Uniform retardation
A train starts from rest and accelerates uniformly at a rate of 2 m s−2 for 10 s. It then maintains a constant speed for 200 s. The brakes are then applied and the train is uniformly retarded and comes to rest in 50 s. Find
- The maximum velocity reached,
- The retardation in the last 50 s,
- The total distance travelled,
- The average velocity of the train.
A car travels with uniform velocity of 25 m s-1 for 5 s. The brakes are then applied and the car is uniformly retarded and comes to rest in further 10 s. Find:
- The distance which the car travels before the brakes are applied,
- Retardation and
- The distance travelled by car after applying the brakes.
Give an example of an accelerated body, moving with a uniform speed.
Draw velocity – time graph for the following situation:
When a body is moving with variable velocity, but uniform retardation.
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.
What is the SI unit of acceleration?
The acceleration of a moving body is constant in magnitude and direction. Must the path of the body be a straight line?
If not, given an example.
The distance covered by a body is directly proportional to the square of the time elapsed. What can you say about its acceleration?
State if the following situation is possible:
A body moving with constant acceleration but with Zero velocity.
A car accelerates to a velocity of 30 m/s in 10 s and then decelerates for 20 s so that it stops. Draw a velocity-time graph to represent the motion and find:
Distance travelled
The Unit of acceleration is ______.
The acceleration of the body that moves with a uniform velocity will be ______.
A quantity has a value of 16ms-2. It is the ______.
A boy throws a ball up and catches it when the ball falls back. In which part of the motion the ball is accelerating?
Acceleration is defined as the rate of change of ______.
It is possible to have objects moving with uniform speed but variable acceleration.
