Question

Figure 2 S. If Figure 2 represents a position versus time plot, in which segment is there a constant positive velocity A)AB B) BC C)CD D)DE E) There isn't a constant positive velocity Figure 2 represents a position versus time plot, in which segment is there a zero velocity? A) AB B) BC C) CD D) DE E) The velocity is never zero. 7. If Figure 2 represents a velocity versus time plot, in which segment is the acceleration constant & nes A)AB B) BC C)CD D) DE E) The acceleration is never negative. S. If Figure 2 represents a velocity versus time plot, in which segment is the acceleration non-constant? A)AB B) BC C)CD D DE E) The acceleration is always constant.

Answer 1

Part(5) Option (A)is correct .Slope of straight line doesnt change.Slope of position vs time graph gives velocity.And angle made by straight line with x axis is acute so slope will be positive.This is in part AB of graph.

Part(6)Option (C) is correct.Position doesnt change with time in part CD so body doesnt move and hence slope is zero.And hence velocity is zero.Because slope of position vs time graph gives velocity.

Part(7)Option (D) is correct.Slope of velocity time graph gives acceleration .In part DE graph is straight line ant it makes obtuse angle with positive x axis.

Part(8)Option(B)is correct.Because in part BC slope keeps on changing so acceleration keeps on changing.