Question

Draw the velocity time graph for an
Object (a) moving with constant velocity
(b)uniform acceleration(c)uniform retardation(d)thrown velocity upwards and then coming downwards after attaining the maximum height​

Answer 1

(1) Moving with constant velocity

• Constant velocity means that the object's velocity is not changing. If (for example) the object's initial velocity is 10 m/s², then it will be 10 m/s² only after some time.

• The graph will be a straight line parallel to x-axis.

(2) Uniform Acceleration

• If the body is uniformly accelerating, its velocity is changing but uniformly. For example, if the initial velocity is 0 m/s and the velocity after 1 second is 2 m/s, it will be 4 m/s after 2 seconds, 6 m/s after 3 seconds and so on.
• The graph will be a straight line but not parallel to x-axis.

(3) Uniform Retardation

• Uniform Retardation means velocity decreases with time uniformly.
• The graph will also be a straight line but different from the above two.

(4) Thrown velocity upwards and then coming downwards after attaining the maximum height

• Here, the graph (a straight line) will start from somewhere above zero, pass through zero on the y-axis (because the object thrown upwards will have zero velocity when it attains the maximum height) and continue downwards (because when the object comes downwards, its velocity is negative.