Question

The figure shows the position - time (x-t) graph of one dimensional motion of a body of mass 0.4kg. The magnitude of each impulse is

(a) 0.2Ns 

(b) 0.4Ns

(c) 0.8Ns 

(d) 1.6Ns

Answer 1

(c) : Here, mass of the body, m = 0.4kg Since position-time (x-t) graph is a straight line, so motion is uniform. Because of impulse direction of velocity changes as can be seen from the slopes of the graph.

From graph,