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प्रश्न
From the given v-t graph it can be inferred that an object is
पर्याय
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.
Distinguish between acceleration and retardation.
Give one example of the following motion:
Uniform retardation
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.
Figure shows the velocity-time graphs for two cars A and B moving in the same direction. Which car has greater acceleration? Give reasons to your answer.
A train moving with a velocity of 20 ms−1 is brought to rest by applying brakes in 5 s. Calculate the retardation.
When is the acceleration due to gravity positive?
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 truck running at 90 kmh−1, is brought to rest over a distance of 25 m. Calculate the retardation and time for which brakes are applied.
What does a positive acceleration mean?
A car traveling at 60 km/h, stops on applying brakes in 10 seconds. What is its acceleration?
State if the following situation is possible:
A body moving with a constant velocity in an accelerated motion.
The graph shows how the velocity of a scooter varies with time in 50 s.
Work out: Deceleration
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:
The Deceleration.
The rate of change of velocity is ______.
A car starts from rest and it is travelling with a velocity of 20 m/s in 10 s. What is its acceleration?
When an object undergoes acceleration ______.
Acceleration is defined as the rate of change of ______.
The value of acceleration for a body at rest is ______.
Assertion: When a body is subjected to a uniform acceleration, it is always moving in a straight line.
Reason: Motion may be straight-line motion or circular motion.
