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प्रश्न
State the type of motion represented by the following sketches in Figures.
Give an example of each type of motion.
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उत्तर
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Type of Motion:Uniform Acceleration
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The graph shows a straight line with a positive slope, indicating that velocity increases at a constant rate over time.
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This means the object is accelerating uniformly.
Example:
A car increasing its speed steadily on a straight road (e.g., from 0 km/h to 60 km/h in 10 seconds at a constant rate). -
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Type of Motion: Non-Uniform Retardation (Deceleration)
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The graph shows a curved line with a decreasing slope, indicating that velocity is decreasing over time, but not at a constant rate.
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This means the object is slowing down, and the rate of slowing down is changing.
Example:
A bicycle coming to a stop when brakes are applied gently and gradually. -
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संबंधित प्रश्न
Distinguish between acceleration and 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 given below shows a velocity-time graph for a car starting from rest. The graph has three parts AB, BC and CD.
(a) Is the magnitude of acceleration higher or lower than that of retardation ? Give a reason .
(b) Compare the magnitude of acceleration and retardation .
If a body is moving with a constant velocity its acceleration is ______.
From the diagram given below, calculate deceleration.
A motorbike, initially at rest, picks up a velocity of 72 kmh−1 over a distance of 40 m. Calculate
- acceleration
- time in which it picks up above velocity.
Distinguish between uniformly and non-uniformly accelerated motions.
The speed of a car increases from 10 km/h to 64 km/h in 10 seconds. What will be its acceleration?
When a body starts from rest, the acceleration of the body after 2 seconds in ______ of its displacement.
What is meant by negative acceleration?
