Problem 4 (2 points) Two mice Full and Dash are moving on a straight track. At t

Question

Problem 4 (2 points) Two mice Full and Dash are moving on a straight track. At time t 0 the two are at the same initial position. Their position vs. time graph is shown in the below: Full is represented with the full line, and Dash with the dashed line. The positive x-axis points to the right. Points on the graph where both curves intersect the horizontal axis are labeled as P and Q. graph xlm 1.0 0.8 0.6 0.4 0.21 1 2 3 4 -0.2 0.4 (a) (1 point) Which one of the following statements is not true? (A) Full and Dash are at the same position at point P. (B) Full and Dash are at the same position at point Q (C) Dash is initially moving towards right (D) Dash's graph has four turning points. (E) At point P Full is to the right of Dash. (F) At point Q Full and Dash are moving in the same direction.

Explanation / Answer

A) True : At P, Full and Dash at x=0 meter, both at same position.

B) True : At Q, Full and Dash at x=0 meter, both at same position.

C) False : Dash is initially moving towards down(also we can say backward, but not right) and Full towards up(also we can say forward)

D) True : Dash is turning four times(near the positions x= -0.4m, then x= 0.2m, then x= -0.2m, then x= 0.1m)

E) False : At point P they both are at same position. But still if we consider the face direction like " !i " they could be either right or left of each other.

F) True : At point Q they both are moving in the same direction.

NOTE :

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