Advertisements
Advertisements
प्रश्न
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 .
Advertisements
उत्तर
(a) The magnitude of acceleration is lower as the slope of line AB is less than that of line CD.
(b) Slope of line AB = vo/t
Slope of line CD = vo/0.5t
Slope of line AB/Slope of line CD = (vo /t)/(vo /0.5t)
Slope of line AB:Slope of line CD :: 1:2.
APPEARS IN
संबंधित प्रश्न
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.
Figure given below shows a velocity-time graph for a car starting from rest. The graph has three parts AB, BC and CD.

Which part of graph shows motion with uniform
(a) velocity (b) acceleration (c) retardation ?
Explain the following concept in your own words with everyday examples:
Acceleration
Interpret the following graph:
What do you mean by constant acceleration?
The slope of a velocity-time graph gives ______.
When a body starts from rest, the acceleration of the body after 2 seconds in ______ of its displacement.
When a body is said to be in
- uniform acceleration
- non–uniform acceleration?
