Question

Statement I : $x-t$ graph, for a particle undergoing rectilinear motion, can be as shown in the figure.
Statement II : Infinitesimal changes in velocity are physically possible only in infinitesimal time.

• A. If both Statement I and Statement II are true and the Statement II is correct explanation of the Statement I
• B. If both Statement I and Statement II are true but the Statement II is not the correct explanation of the Statement II
• C. If Statement I is true but Statement II is false
• D. If statement I is false but statement II is true

Answer 1

Answer: (D)

At the high point of the graph velocity (slope of $x - t$ curve) charges suddenly from a positive to a negative value. This is physically impossible.