Given distance (S)-time (t) graph represents motion with :
uniform acceleration with initial velocity
uniform retardation with steady rate
none of the above
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In the given graph the object travels equal distances in equal intervals of time. Hence, the body possess uniform velocity. Option A is the correct answer.
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Which of the following distance-time graph (x-t) represents one-dimensional uniform motion?
Draw a velocity-time graph for a body moving with an initial velocity u and uniform acceleration a.Use this graph to find the distance travelled by the body in time t.
Fig. 2.42 given below shows a velocity-time graph for a car starting from rest.The graph has three parts AB,BC and CD.
(i) State how is the distance travelled in any part is determined from this graph.
(ii) Compare the distance travelled in part BC with the distance travelled in part AB.
(iii) Which part of graph -shows motion with uniform (a) velocity (b) acceleration (c) retardation ?
(iv) (a) Is the magnitude of acceleration higher or lower than that of retardation ? Give a reason.(b) Compare the magnitude of acceleration and retardation.
Given acceleration (a)-time (t) graph represents motion with :
A lift ascends from rest with uniform acceleration of 4 ms−2, then it moves with uniform velocity and finally comes to rest with a uniform retardation of 4 ms−2. If the total distance covered during ascending by the lift is 28 m and the total time for ascending 8 s, respectively, then find the time for which the lift moves with uniform velocity. Also, find its uniform velocity. Find the time for acceleration, retardation and uniform velocity.