The position of two particles, A and B, are given in the x versus r graph. Assum

Question

The position of two particles, A and B, are given in the x versus r graph. Assume the particles move along tracks that are placed side-by-side. x (m) 10 A r(s) 10 20 40 50 60 (a) At 0 s particle B (indicated by dashed line) is 5 m ahead of A. During the time interval shown, is there another instant when this is true? If your answer is yes, state the approximate time when this occurs. If your answer is no, state that explicitly. In either case, explain your reasoning. ) Do the particles simultaneously have the same velocity (magnitude and direction)? If so, at what time does this occur? Explain.

Explanation / Answer

(a) By looking at the graph of two particle

Particle B is 5 m ahead of particle A at time t=48 sec

(b) when the slope of both graph is same ,we can say velocity is same

lokking at the graph

at t=20 sec

velocity is same

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